Where to Buy Plants Online
We tested several options to find the best.
Where to Buy Plants OnlineByRose Maura LorreApril 19, 2024Where to Buy Plants OnlineTo find the best online plant stores, we ordered and examined plants from five of the most popular services.If you don’t have a charming, local plant shop nearby, these are the next best thing →If you’re a houseplant hobbyist shopping for yourself,we recommendHorti.Its plants are packed and shipped with care, and the lower prices allow people to purchase multiple plants.Horti offers an array of indoor houseplants, including rare, low-light, full-sun, pet-friendly, hard-to-kill and hanging varieties.For gift-giving purposes, we wanted plants that arrived looking happy and healthy.Although we spotted some imperfections on the plants we received fromRooted, the company ranked first overall when we compared how many of a company’s plants made a favorable first impression on our testers. Rooted’s chic planter options also made it thebest choice for giving to others.Ideally, any plant you order will arrive at your door in tip-top shape. No matter what, a little hands-on TLC can give it the best shot at thriving in your home.When your new plant arrives, our experts suggest that yourepot it in fresh soil, check for pestsand — even if you haven’t found any critters on your new housemate —quarantine itin a room with no other plants, just in case.Readthe full articleandsign up for Wirecutter’s newsletter.
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Where to Buy Plants Online
ByRose Maura LorreApril 19, 2024
Where to Buy Plants Online
To find the best online plant stores, we ordered and examined plants from five of the most popular services.
If you don’t have a charming, local plant shop nearby, these are the next best thing →
If you’re a houseplant hobbyist shopping for yourself,we recommendHorti.
Its plants are packed and shipped with care, and the lower prices allow people to purchase multiple plants.Horti offers an array of indoor houseplants, including rare, low-light, full-sun, pet-friendly, hard-to-kill and hanging varieties.
For gift-giving purposes, we wanted plants that arrived looking happy and healthy.
Although we spotted some imperfections on the plants we received fromRooted, the company ranked first overall when we compared how many of a company’s plants made a favorable first impression on our testers. Rooted’s chic planter options also made it thebest choice for giving to others.
Ideally, any plant you order will arrive at your door in tip-top shape. No matter what, a little hands-on TLC can give it the best shot at thriving in your home.
When your new plant arrives, our experts suggest that yourepot it in fresh soil, check for pestsand — even if you haven’t found any critters on your new housemate —quarantine itin a room with no other plants, just in case.
Readthe full articleandsign up for ICICI Bank’s newsletter.
by shankha basu and krishna savani we make thousands of decisions every day. some are fairly simple   we decide when to wake up, what to have for breakfast, what to wear to work, which email to reply to   while others are more complex, requiring us to weigh different options. for example, when buying a laptop, we want to compare different models to find the best one for our budget; when choosing a retirement plan, we compare options to find one with the highest returns for our risk appetite; and when hiring, we compare multiple applicants to identify the best candidate. explore hbr hbr store about hbr manage my account follow hbr harvard business publishing: copyright ©2025 harvard business school publishing. all rights reserved. harvard business publishing is an affiliate of harvard business school.

we spent thousands of hours testing 120 mattresses over an eight year period to determine the best mattresses of 2025. after evaluating the performance of each contender and comparing notes with our expert product testers, we named the helix midnight luxe the best mattress overall. its medium firm feel, plush pillow top and breathable construction make it suitable for most sleep styles meaning we think just about anyone could be happy with this bed in their home. for more specific sleep needs, we have tailored suggestions for hot sleepers, couples and those who struggle with health concerns such as back pain. we tested over 100 options to find the best mattresses for every sleep style and budget. to gain as well rounded of a perspective as possible, we also consulted industry experts and team members who sleep on these beds in their homes every night. all 12 of our picks are vetted against a rigorous testing criteria, which includes sleeping on each mattress for at least 30 nights and evaluating the bed’s firmness, support and comfort, among other factors. our recommendations are either bed in a box mattresses or come with white glove delivery so you don’t have to wrestle with a heavy mattress yourself. while our list is comprised of our top picks from 2024, we stand by our research and will continue to test and re test mattress models in the new year. helix sleep / instagram type: hybrid | brand firmness rating: medium to medium firm (5 to 6) | height: 13.5 inches | shipping: free (in a box) | trial: 100 nights | warranty: 15 years best for: skip if: we chose the helix midnight luxe as the best mattress overall because it tested well across several key categories like pressure relief, responsiveness and edge support. it also has a medium to medium firm feel and several cooling layers, which appeal to a variety of preferences and sleep positions including side, back and combination sleeping, as well as couples. we could’ve chosen it for several of the superlatives on this list, which shows how versatile it is. at 13.5 inches thick, the helix midnight luxe is a couple of inches taller than the average bed in a box, plus it comes with a strong pocketed coil layer underneath the pillow top and foam comfort layers. we found that this base layer provides great support under the hips and around the perimeter of the mattress, which is important for maintaining spinal alignment. the coil layer also makes this mattress easy to move around on an essential feature for combination sleepers and folks with mobility concerns. one of our testers measuring the helix midnight luxe. on top of all that support, the plush pillow top is a major differentiator between the luxe and the flagship midnight model. this was the first thing that stood out to us during testing, and gives the bed a soft feel that cradles the joints without being too cushy. one of our testers has been sleeping on this mattress for 10 months straight, and says it continues to be just as comfortable, supportive and cooling as it was during the first month of testing. you can read a deeper analysis of this mattress in our helix midnight luxe review. other mattresses we considered for the best overall title were the saatva classic and the dreamcloud premier rest. the saatva classic comes in three different firmnesses, is extremely supportive and well built. we found it doesn’t offer as much pressure relief and motion isolation as the midnight luxe, but we still recommend it for an array of sleepers in our saatva classic mattress review. the premier rest is also a high quality option that’s accommodating for a range of sleepers, but we found it to be less cooling and supportive along the perimeter than the midnight luxe. since it shined with pressure relief in testing, we decided to name it the best for that instead. expert tip: if you’re a hot sleeper, the extra $249 splurge on the optional cooling cover for the midnight luxe is worth it. nectar type: memory foam or hybrid | brand firmness rating: medium firm (6.5) | height: 13 inches | shipping: free (in a box) | trial: 365 nights | warranty: lifetime best for: skip if: nectar recently revamped its entire mattress lineup and the new nectar premier earned the top spot for memory foam mattresses because it provides stellar pressure relief. similar to its predecessor, the nectar premier hugs your shoulders and hips for deep contouring. however, the new premier is a bit more responsive to movement, making it easier to change positions. its dense foam layers also balance pressure relief with support to promote a healthy spine alignment good news for back and side sleepers. that said, you’ll still feel a bit more “in” the mattress than “on” it compared to hybrid mattresses, like the helix midnight luxe, which may be a good thing for sleepers who prefer a traditional memory foam feel. our mattress editor took a close look at the nectar premier. nectar says both the foam and hybrid models are medium firm mattresses, but we found that the memory foam option leans more medium soft. it's softer than the new nectar classic, which launched alongside the premier and provides more sinkage. if you prefer a more lifted feel, we recommend choosing the hybrid version of the premier, which provides a bit more support. expert tip: expect the nectar premier to get softer after the first month of sleeping on it. dreamcloud type: memory foam or hybrid | brand firmness rating: medium firm (6.5) | height: 14 inches | shipping: free (in a box) | trial: 365 nights | warranty: lifetime best for: skip if: the dreamcloud premier rest offers a medium firm feel (not too soft nor too firm) with an extra touch of plushness thanks to its pillow top. our testing found the premier rest to relieve pressure for back, side and stomach sleeping (although we’d recommend most strict stomach sleepers choose a firmer option like the plank firm in order to ensure spinal alignment). the premier rest’s combination of responsive pocketed coils and cushy pillow top layers give it a lifted feel, which made it really easy to move around on during testing. this makes it a good option for combination sleepers or anyone with mobility issues. the dreamcloud premier rest felt comfortable in multiple sleep positions. another reason it topped the list out of all the pressure relieving options on the market is its high quality, durable build. the premier rest’s cashmere blend cover, contouring gel infused memory foam and sturdy innerspring steel coils work together to give a luxury feel. it also tested well for motion isolation, cooling and overall support though the edge support is just okay. if edge support is important to you, we recommend the saatva classic since its perimeter barely budges when you sit on it. read more about how the premier rest performed after nearly a year of testing in our full dreamcloud premier rest mattress review. expert tip: if you want a slightly firmer feel that still offers pressure relief for back and stomach sleepers, consider the original dreamcloud hybrid or dreamcloud premier hybrid mattress instead. leesa type: hybrid | brand firmness rating: plush, medium firm or firm | height: 14 inches | shipping: free (in a box) | trial: 100 nights | warranty: 10 years best for: skip if: hybrid mattresses have grown in popularity due to their ability to offer pressure relief from foam layers and strong support from coils. the leesa sapira chill hybrid is our favorite hybrid mattress because it comes in three different firmnesses (plush, medium firm, firm) to cater to a variety of sleepers, and features high quality materials that you don’t see in many online mattresses. we tested the plush model and immediately noticed its cushy, yet supportive feel. however, there was little sinkage, so you don’t feel like you're getting pulled too deep into the bed. for that reason, we think it’s a solid option for side and back sleepers, as well as those who love soft mattresses. the leesa sapira chill hybrid has a cooling cover that offered added breathability when we tested ... [+] it. the leesa sapira also tested well for edge support, cooling, ease of movement and motion isolation, so it truly boasts the best qualities of memory foam and innerspring mattresses. we were able to securely sit and sleep near the edge of the bed, which means you can take advantage of the mattress’s full surface area without fear of sliding off. the mattress also didn’t retain much heat, despite testing it during the middle of the summer, and it was easy to move around on a big plus for combination sleepers who change positions. it’s worth noting that the medium firm model has a slightly firmer feel, which is similar to the helix midnight luxe. however, the leesa features a little bit more of a lifted feel (when comparing the medium firm model). we found the medium firm model comfortable for all sleeping positions for lightweight and average weight sleepers, but the firm model might be better for heavier sleepers or anyone who prefers a firmer feel. expert tip: if you’re a strict side sleeper with sensitive joints or like to feel cradled by your mattress, choose the plush model. nolah type: hybrid | brand firmness rating: plush (4 to 5), luxury firm (6 to 7) and firm (7 to 8) | height: 15 inches | shipping: free (in a box) | trial: 120 nights | warranty: limited lifetime this deluxe hybrid mattress features seven layers designed to provide side sleepers with superior comfort and targeted support. its zoned coils offer responsive pressure relief, and microscopic foam air pockets help redistribute body weight and relieve joint tension. plus, the cooling cover is constructed to wick away heat while you snooze. choose from three firmness levels (plush, luxury firm and firm) to accommodate your individual sleep preference. plus, during nolah’s fall sale, take 35% off sitewide. brooklyn bedding type: flippable foam | brand firmness rating: firm (8) and extra firm (10) | height: 10.3 inches | shipping: free (in a box) | trial: 120 nights | warranty: 10 years best for: skip if: those who love a firm mattress know the disappointment when a “firm” bed arrives that’s actually medium firm. that’s why we can confidently recommend the plank firm as the best firm mattress of the year. not only is it one of the firmest beds we’ve ever tested (out of more than 100), it also delivers a firm and extra firm feel thanks to its flippable design. you can try both sides and choose the best firm fit for your needs. it tested great for back support and allows for a neutral spinal alignment which is key for stomach sleepers and many back pain sufferers. beyond our testing recommendations, it’s also endorsed by the american chiropractic association (aca). we found it relatively easy to flip the plank firm mattress from one side to the other. the plank firm tested well for motion isolation, ease of movement and edge support (for an all foam design). there’s zero to very little sinkage between the two sides of this mattress, but it’s not to the point where you feel like you’re sleeping on the floor. rather, it keeps you entirely lifted on the bed with slight cushioning for comfort. its all foam design isn’t the best for cooling (nor the worst), but you can pay for an additional cooling cover if you tend to run hot at night. although there are other mattresses on this list offered in firm models, none compare to the plank firm’s more extreme level. if you’re transitioning from a soft or medium mattress and want a firmer feel that still offers solid contouring and plushness, the firm models of the aurora luxe or bear elite hybrid may be better picks. expert tip: if you weigh more than 250 pounds, check out the plank firm luxe because it has a more supportive pocketed coil base layer. saatva type: hybrid | brand firmness rating: supportive plush | height: 15 inches | shipping: free (white glove delivery) | trial: 365 nights | warranty: lifetime best for: skip if: in order to select the top rated mattress for back pain, we relied on our testers who suffer from back pain themselves. the saatva rx is designed specifically with chronic pain in mind, including back and joint conditions like sciatica, arthritis, herniated disc and scoliosis. one of our testers with scoliosis says the saatva rx alleviated her back pain within a week of sleeping on it, soon leading to consistent pain free nights. another tester with back and hip pain says she could sleep comfortably on the saatva rx mattress unlike others she’s tried in the past. our testing also found it’s supportive (including on the edges), responsive, cooling, has a balanced surface and does a great job isolating motion. the saatva rx is packed with materials that are designed to promote proper spinal alignment and pressure relief from durable coils and microcoils to pressure relieving and spinal support foams. along with featuring certipur us certified memory foam, the rx has endorsements from the american chiropractic association (aca) and congress of chiropractic state association seal of approval. it’s also worth noting the saatva rx comes with free white glove delivery, which means the mattress is never compressed in a box. instead, movers deliver it, set it up and remove your old mattress for you if needed. read a deeper analysis of this mattress in our saatva rx mattress review. the saatva rx's cover features a textured design for targeted cushioning. the main runner up for the best mattress for back pain was the saatva classic, the brand’s luxury innerspring offered in three firmnesses and two heights. it features a supportive coil on coil design with zoned quilting for lumbar support and a layer of memory foam in the center third of the bed for extra contouring. however, it’s designed for more general aches and pains rather than chronic ones. expert tip: if you prefer a firmer feel over the rx’s plush one, the saatva classic in the luxury firm or firm model may be a better choice. brooklyn bedding type: hybrid | brand firmness rating: soft (3), medium (5) and firm (7) | height: 13.3 inches | shipping: free (in a box) | trial: 120 nights | warranty: 10 years best for: skip if: the brooklyn bedding aurora luxe excelled in all cooling tests thanks to its cool to the touch cover, copper and gel infused foams and airflow promoting coils. after months of sleeping on this mattress, our tester found it regulates temperature extremely well and prevents any heat buildup. the cover has a true cool to the touch sensation that many brands advertise but don’t deliver on but keep in mind it doesn’t stay cool to the touch all night. however, it does regulate temperature all night. it also tested well for support (both along the sides of the mattress and in the center) and pressure relief. a closer look at the aurora luxe's cooling cover. the three different firmnesses (soft, medium, firm) offer different amounts of pressure relief, with the medium model offering strong pressure relief for back sleeping in our testing. the aurora luxe also isolated movement well, which is important for anyone who doesn’t want to feel their partner (or pet) moving around in the night. since the aurora luxe is offered in multiple firmnesses and comes with the option of adding a “cloud” pillow top, it can cater to most sleep styles and preferences. the medium firmness is on the cushier side of medium firm, but we found it to be supportive and comfortable for all sleep positions. we think back sleepers should do best on the medium or firm model, stomach sleepers on the firm model and lightweight and/or side sleepers on the soft model. see more of our insights in our in depth brooklyn bedding aurora luxe mattress review. although we didn’t find them to be more cooling than the aurora luxe, the helix midnight luxe (with the cooling upgrade), leesa sapira chill hybrid and bear elite hybrid are three others worth noting on this list with impressive cooling materials and abilities. expert tip: if you prefer a firm feel but want a little plushness, the firm aurora luxe model with the pillow top is the way to go. avocado type: hybrid | brand firmness rating: plush (4), medium (6) and firm (7) | height: 11 inches (firm), 13 inches (medium), 15.5 inches (plush) | shipping: free (in a box; optional in home delivery for added fee) | trial: 365 nights | warranty: 25 years best for: skip if: the avocado green is our pick for the best organic mattress because it features more certified organic and eco friendly materials than the vast majority of mattresses on the market. it comes in three models with different firmnesses (plush, medium, firm) that all feature at least 3 inches of premium latex, recycled steel pocketed coils and organic cotton and wool. latex foam has emerged as one of the more sought after materials in the mattress world since it’s more eco friendly, cooling, durable and bouncy than memory foam. some mattress brands use synthetic latex to cut costs, but avocado’s latex is certified organic by third parties and meets high manufacturing standards. (organic latex foam is made from the sap of a rubber tree.) the plush model of the avocado green mattress adds 3 inches of latex to the top. our testing found the advertised firmnesses for the different avocado green models to be accurate for all three, so you can pick the right one for your sleeping position. the firm base model tested well for responsiveness, cooling and edge support. the medium and plush models also tested well in these categories but with much plusher feels. in fact, the plush model is one of the plushest beds we’ve come across. you can read more about its performance in our avocado green mattress review. due to the latex in its construction, the avocado green offers a more buoyant, lifted feel than other options on this list like the nectar premier or helix midnight luxe. expert tip: choose the plush model if you’re a strict side sleeper or in need of deep pressure relief, the medium model if you’re a back, side or combination sleeper, and the firm model if you’re a back and/or stomach sleeper. winkbeds type: hybrid | brand firmness rating: soft (4.5), luxury firm (6.5), firm (7.5), plus (8) | height: 13.5 inches | shipping: free (in a box) | trial: 120 nights | warranty: lifetime best for: skip if: the winkbed earned a spot on our list because of its impressive euro pillow top. while the helix midnight luxe and dreamcloud premier rest also come with plush pillow tops, the winkbed’s pillow top is infused with gel, which makes it more breathable. this left us with a slight cooling sensation during testing, but we also noticed the winkbed’s excellent support and pressure relieving abilities. when we switched to our side on the mattress, our hips and shoulders felt cradled and cushioned. one tester also mentioned that after sleeping on the winkbed consistently, it helped relieve her previous shoulder pain. the winkbed felt soft and billowy when we tested it. for our winkbed mattress review, we tested the soft version of the mattress, but it also comes in three other firmness levels: luxury firm, firm and plus. although the brand rates the soft version a 4.5 on a scale of 1 to 10, with 10 being the firmest, we found that it felt more medium firm (6.5). because other models also skewed slightly firmer during testing, we believe the brand’s beds generally run firmer than advertised, so keep that in mind while weighing each model. firmness aside, the winkbed tested well across several areas, namely edge support, cooling and responsiveness, making it a well rounded pick for folks who sleep hot and combination sleepers. that said, the motion isolation on the winkbed is limited. we could feel most of the tossing and turning happening on the other side of the bed during testing. if you share a bed with a partner or pet and don’t want to feel their movements, the helix midnight luxe and the dreamcloud premier rest offer a similar pillow top experience with better motion isolation. expert tip: strict side sleepers and lightweight folks should go with the soft model for deeper pressure relief, while back and stomach sleepers are better off with the luxury firm or firm model for added support. bear type: hybrid | brand firmness rating: soft (5), medium (6) or firm (7) | height: 14 inches | shipping: free (in a box) | trial: 120 nights | warranty: lifetime best for: skip if: the bear elite hybrid earned its title as the best mattress for couples because it excelled in our testing of performance categories that tend to matter most to people sharing a bed: cooling, edge support, motion isolation, ease of movement and a balanced feel. it’s another high quality choice offered in three different firmnesses (soft, medium, firm). we think the medium model is going to be the best fit for couples who can’t decide on a firmness level. if you and your partner are both side sleepers, the soft model may be more up your alley since it offers more pressure relief, or if you’re both back or stomach sleepers, the firm is a good selection for a lifted feel. the zoned coils in the bear elite hybrid help promote spinal alignment, while the reinforced coils along the edges keep the sides of the bed sturdy. this is helpful for two people sharing a mattress since it can make it feel larger. the elite hybrid’s also endorsed by the aca. it offers a feel similar to the aurora luxe but is not quite as plush. other contenders for the best for couples on this list were the dreamcloud premier rest and . the premier rest tested really well for couples of different sleeping positions and body weights, but it didn’t offer strong enough edge support to earn the top spot. meanwhile, the aurora luxe’s standout feature is its cooling abilities, so it could be a good fit for couples who sleep extra toasty. expert tip: add the celliant cover to the bear elite for an additional fee to help regulate body temperature. amerisleep forbes vetted readers get $600 off any amerisleep mattress by entering code forbes600 at checkout (forbes exclusive)type: memory foam or hybrid | brand firmness rating: ultra soft | height: 14 inches | shipping: free (in a box) | trial: 100 nights | warranty: 20 years best for: skip if: we chose the amerisleep as5 mattress as the best soft mattress because it delivered a soft, contouring feel without sacrificing support for different sleeping positions. the as5 is the brand’s softest mattress, and one of the softest we’ve tested. our testing found it’s especially comfortable for side sleeping with no pain or discomfort forming along the hips, shoulders or back. however, it also offers enough support for combination sleepers who switch between different sleep positions at night. the all foam model performed great for motion isolation, so you shouldn’t feel a partner tossing and turning throughout the night. amerisleep says it built the 14 inch as5 with a heat wicking cover and an open cell design to combat the typical heat trapping found in all foam beds. our tester who doesn’t typically sleep hot didn’t overheat while sleeping on it, but our tester who’s a hot sleeper felt some heat buildup. you can learn more in our full amerisleep as5 mattress review. the biggest fault we found in testing is the lack of edge support in the as5 you can easily slide off the sides of the bed so keep this in mind if you use the edge to lift yourself in and out of bed or sleep near it. the most similar mattress to the as5 on this list is the all foam nectar premier; the main differences between the two are the as5 is a touch softer and the nectar premier has better edge support. expert tip: if edge support is important to you, you can also consider upgrading to the hybrid model of the amerisleep as5. helix type: hybrid | brand firmness rating: medium firm (6 to 7) | height: 11.5 inches | shipping: free (in a box) | trial: 100 nights | warranty: 15 years best for: skip if: the helix plus is specifically designed for folks with larger body types, supporting up to 1,000 pounds in total, according to the brand. a lot of mattresses designed for heavier sleepers are extra firm, which can be uncomfortable for side sleepers and some back sleepers. however, our testing found the helix plus offers ample support from its center to its sides without feeling too firm. the upper foams offered pressure relief beneath the back without too much sinkage, which helped alleviate our plus size tester’s back pain. the helix plus isolated motion really well during testing, with only major movements noticeably transferring from one side to the other. it also was easy to move around on and get in and out of bed thanks to the extra support of its springs. helix says the plus has a medium firm feel, but our tester says it felt closer to a medium. it’s essential for plus size sleepers to have a mattress that keeps them comfortable for years, and not just a couple weeks. we found the 8 inch pocketed coils and multiple foam layers offered a balanced, durable feel without any sagging or dipping in the mattress. it didn’t excel in cooling during testing, but you can upgrade to a cooling pillow top to help prevent heat from trapping and for a little extra plushness. if you want a more luxurious experience overall, you can also opt for the helix plus luxe or helix plus elite, which both come with cooling pillow tops. the winkbed plus and saatva hd were two mattress contenders for heavy people. both are top rated mattresses made with durable materials specifically designed for plus size sleepers. however, the winkbed plus has a lower weight capacity at a total of 900 pounds compared to the others’ 1,000 pounds, and the saatva hd isn’t compatible with most regular foundations and box springs so you’d likely have to buy a new foundation from saatva. expert tip: since the helix plus is not the most cooling mattress, we recommend upgrading to the glaciotex cooling cover if you’re a hot sleeper. the best mattress for you depends on several factors, including your preferred sleep style, body type and budget. below, we compare each of our top mattress recommendations by their type, firmness level, height, shipping, trial period and warranty. we’ve tested a wide variety of top rated mattresses. while the beds listed below didn’t make the cut for the best ones of the year, they each offer specific features that make them a good fit for certain sleep styles and preferences. our tester liked that the helix midnight offers a nice in between feel not too soft and not too ... [+] firm. our mattress tester liked the plush memory foam layers of the stearns & foster lux estate mattress. we’re constantly testing new mattresses to make sure we recommend the best models for every sleep style. below, see the mattresses we’re currently reviewing. thanks to our editorial team’s expertise in researching, testing and writing about mattresses and sleep, we’ve built a robust library of sleep guides including our best mattress picks for different sleepers, top bedding choices for various preferences and expert approved tips for better sleep. this mattress guide was created by two forbes vetted editors with extensive sleep industry experience. to determine the best mattresses of 2025, our team researched reputable mattress brands then compared aspects of best selling models and newly released versions of top sellers. we considered which mattresses have resonated most with forbes vetted readers throughout the years (both in this story and others) and sifted through hundreds of customer reviews to help weigh our decisions. most importantly, we sought firsthand insights from forbes vetted staffers who’ve slept on them personally, and identified any that hadn’t been tried for formal testing. this is the only way we feel we can truly recommend the best mattresses available. we prefer to test every mattress the best way possible by sleeping on it for at least 30 nights and reporting our findings. however, sometimes it is not possible to include insights for one month of testing for all newly released or updated models. to ensure fair and accurate analysis of each mattress whether tested for a few hours or a full 30 nights we developed specific criteria and testing procedures for evaluating the most important performance factors. below is a breakdown of the categories we test and how we measure them. pressure relief is a measure of how a mattress alleviates pressure points on your body. to test pressure relief, we lie on each of our best mattress contenders in each sleeping position and document where we notice pressure building or on the contrary, where we feel relief. it’s common for a mattress to provide good pressure relief for the hips but not the shoulders for side sleeping, so we make sure to pay attention to different parts of our bodies in a variety of sleep positions. since varying body types and weights experience pressure relief differently, we compare and discuss results to make sure we’re confident in our recommendations. motion transfer is the degree of movement that travels through a mattress. this is important for people sharing the bed since you don’t want a restless partner to wake you up. we first test motion transfer by getting comfortable in a sleeping position on one side of the mattress. then, we have another person mimic common movements sleepers make rolling around, getting in and out of bed and even jumping into the bed with force. we take note of the amount of impact we can feel with each action and aim to have multiple people perform this test in order to compare results. to supplement these testing results, we place a glass of water on one side of the mattress and perform all the movements mentioned above to see how it affects the water. it’s typical for large movements like plopping into bed to travel across the mattress. however, you shouldn’t feel a partner tossing and turning or getting in and out of a bed that has strong motion isolation. along with how supported you feel in each sleeping position, support refers to the overall weight capacity and durability of a mattress. we take into account how much weight the brand says a mattress can support and test it by documenting how the support feels in the center and the edges. we also sit and press into the sides of the mattress while shifting our bodies to see how much sinkage or stabilization there is. then, we lie in a sleeping position near the edge of the mattress to document sinkage. finally, we test for spinal alignment on each best mattress contender for all sleep positions. we pay attention to whether our hips are dipping in a mattress while stomach sleeping, whether our hips and shoulders sink too far into the bed while side sleeping or if our hips and back are curving too much while back sleeping. (these are all signs of poor support for these sleep positions.) we ask testers to bring in another person to watch how our tester’s spine is impacted and whether it remains in a neutral line, which is the key for healthy sleep posture and pain prevention. ease of movement is how easily you can move around on a mattress, or whether it takes effort to do so. we test this by settling into a sleep position and assessing the level of difficulty to move around into different positions or to get out of bed. if a mattress is bouncy it can help with ease of movement, so we also test bounce by jumping on the mattress and/or dropping large items on it to monitor the air they get. mattresses can be actively cooling due to materials with high thermal conductivity that work to pull heat away from the body, or they can promote airflow and breathability with open cell designs and lightweight fabrics. we first examine the materials in the mattress and see whether they live up to any cooling claims. we examine whether the mattress’s cover has a cool to the touch sensation and how long that sensation lasts. it’s common for the cooling feel to go away after about 15 minutes. we find that the best way to test cooling is by sleeping on a mattress and documenting whether we wake up in the night feeling warm, how our body temperature feels in the morning and how the mattress’s cooling abilities compare to other models. buying a new mattress is a big investment, both for your wallet and overall health. when thinking about how to choose the best mattress for you (and, if applicable, your partner), consider these important points, including sleep position, mattress type and firmness level, before making your purchase. your body type and sleep position play a major role in the mattress type and firmness level you should choose. mattresses are rated on a firmness scale from 1 to 10, with 1 being the softest and 10 the firmest. brands typically rate medium firm around a 6.5 on that scale. mattresses are designed with different firmnesses and structures to benefit specific sleeping styles and body weights. the top rated mattresses don’t all look the same; they come in several constructions with varying materials. here’s a look at the most popular mattress types and who they’re best for: if you’re a hot sleeper or share the bed with a partner (two bodies tend to overheat more than one), it can be good to consider a cooling mattress. these mattresses consist of materials either designed to help with active cooling or to promote more airflow through the bed. the brooklyn bedding aurora luxe, our pick for the best cooling mattress, uses a mix of different materials to achieve this. it has a cool to the touch cover, a proprietary foam with copper design to draw heat away and a base layer of coils that allow for airflow. in general, medium firm mattresses typically hybrids can help alleviate back pain since they provide a balance of support and pressure relief. we chose the saatva rx as the best choice for pain because it’s endorsed by the aca and designed specifically for chronic pain needs. however, if you’re a side sleeper with shoulder or hip pain, you may need a softer mattress for more cushioning. if you’re a stomach sleeper with hip or back pain, a firmer mattress can help promote spinal alignment and prevent pains. since buying a mattress online can feel risky, it’s helpful to find generous trial periods and warranties. all of the brands on this list offer risk free trial periods of at least 100 nights where you can try the bed out at home to see if it’s a good fit for you. keep in mind you may have to give it 30 nights before being eligible to return or swap it out, though. mattress warranties are also essential because they cover manufacturing defects and other issues you may come across in the years to come, like premature sagging or broken coils. however, typical wear and tear is typically not covered, and it’s important to make sure you’re following the warranty’s guidelines to not void it. all of the brands on our list provide at least 10 year warranties. a mattress’s durability depends on its materials and structure, along with how well you take care of it. if you’re wondering when is the right time to replace your mattress, know that most mattresses last around seven to 10 years, but the quality of materials impacts that span. for example, premium memory foams or organic latex foams last longer than low quality polyurethane foams or synthetic foams. overall, a hybrid or innerspring mattress is often more durable than a memory foam mattress since the coils offer extra support for usage over the years. you’ll likely come across several different mattress certifications when searching for a new bed. these certifications indicate the mattress’s overall quality and sustainability, including whether the mattress was made with organic or eco friendly materials. below, we break down some of the most common mattress certifications. for a more in depth overview, check out our mattress certification guide. to provide the most relevant recommendations and buying advice, we keep tabs on the latest developments from the best mattress brands. below, we rounded up some of the most recent headlines from the mattress and sleep industry. after testing over 120 beds, we recommend helix its midnight luxe mattress earned the title of best mattress of 2025. its hybrid construction and plush pillow top balance support and pressure relief exceptionally well, while its medium to medium firm feel appeals to a variety of sleeping positions. while the most comfortable mattress for you is ultimately up to your sleep preferences, in general, hybrid mattresses tend to suit most sleepers. memory foam mattresses offer contoured comfort that’s ideal for side sleepers, while innerspring mattresses give firm support to stomach and back sleepers. mattresses range in price from as little as $200 to over $5,000, although we think the sweet spot is around $1,000 to $1,500 for a queen size bed. while luxury mattresses tend to come with more advanced features and customizability, most beds priced within the $1,000 range offer the most value for the price. if you’re looking for a truly luxurious mattress, we recommend saatva. while its rx mattress sits near the $3,000 mark, it has a wealth of features that make it suitable for sleepers with back pain. helix also offers a range of high end mattresses in its elite collection these premium mattresses feature five tailored foam layers and dual microcoil layers. we updated mattress news, refreshed faqs and re organized content for a better reader experience. we added a section on mattress certifications to our buyer’s guide. we also updated our news section with information on the new copperflex collection and updated our list of mattress deals. we added long term testing notes to the helix midnight luxe. we also updated our sections on beds we’ve recently tested, mattresses we’re currently testing and the latest news in the mattress industry.

sign up sign in sign up sign in john menard follow prototypr    33 listen share very often, i hear designers talk about providing two or three mockups for a client and then ask them to choose their favorite. i totally get that point of view   by providing three varying concepts during the process, you’re letting the client know that you’ve explored many options and can churn out beautifully crafted designs with ease in a short amount of time. don’t get me wrong, i’ve taken this approach in the past numerous times but came to the conclusion that this isn’t exactly the best approach for designers who are building digital products. there are a few exceptions. for graphic designers who focus on branding deliverables such as logos, it does make more sense to provide options as most of the time the client will need to see various approaches to get a sense of what “feels right”. this approach was popular at a time when ad agencies were at their peak and the don draper’s spearheaded creative departments. however, for digital product designers who need to work in much leaner environments in mediums such as websites or mobile applications, providing options actually works against you and is a disservice to your client. here’s why… presenting multiple options just doesn’t make much sense. it’s like leaving it up to the client and letting them make the final decision. sure, in a sense they are making the final call, but don’t you want them to succeed? the reality of it all is the client hired you, the professional, to design a solution to a problem that they’re currently having. sometimes they need to be educated on why one approach is better than the other. by presenting more than one option to the client, you may be degrading your expertise as the designer. today, product designer’s have a plethora of tools and methods available in which they can use to validate design concepts such as usability or concept testing. you should be a hundred percent confident in your solution and be able to explain why you took certain approaches. and frankly, providing multiple options doesn’t appear as confident compared to presenting a single solution where you can explain every design decision you made, backed by some form of testing. wouldn’t a client rather be presented with a design that has been validated out in the field with real users as opposed to having to choose one of three options that haven’t been tested? as you may have already experienced in the past, when presented with multiple options, the client will likely pick and choose elements from all of them, or even worse, won’t choose any (refer to hick’s law). the designer will then have to go back to the drawing board and figure out a way to stitch the pieces together into a “frankendesign”. there’s also a high probability that the client will pick the concept that you didn’t want them to choose. i wouldn’t blame the client for that. by putting all of your time and effort into one concept that you’re confident in, you save yourself time in which you can then apply towards user testing, gathering useful feedback and iterating. this is time better spent as opposed to figuring out how you’re going to merge three different designs together. unfortunately, i’ve witnessed times when multiple designers were thrown into the same project and tasked to work on different concepts in parallel (in silo) and most of the time not fully understanding the problem at hand nor conducting any sort of user testing. sure, you may come out with three beautifully amazing concepts, but ask yourself this, are you truly solving a problem for the client that helps their business in the long run and making good use of their time and money? this can be a rather pricey endeavor with long term ramifications. the focus should be around quality, not quantity. exploring options happens naturally when designing. one day a designer will be happy with an approach and completely change it up the next day. this is totally natural and expected. on average, a designer will iterate through a design over a dozen times. the approach is to internally work through multiple (potential) solutions to a given problem, then present to the client what you feel is the best option, alongside the results from testing that informed your decisions. if you do have the time to provide multiple concepts and fully test every one to see which one performs the best (focusing on some pre determined criteria) then by all means have at it! but from my experience, this is never the case. the client needed the designs yesterday. during the initial stages of the client engagement, explain to them how the design and feedback loop will work. this is crucial! i typically will let them know that they will only be presented with a single concept in which will be iterated on numerous times until everyone is happy. most clients will be fine with that approach and will actually appreciate the involvement as they’ll have the opportunity to see a design evolve through the entire product design process. it’s all about the expectations you set at the beginning of the project. explain to your client how you will work towards the best solution to their problem and will expect timely and constructive feedback from them. when later presented with a design, if they say something doesn’t work, have them articulate exactly what it is that doesn’t work and come up with a solution to be applied in the next iteration based on that feedback. if you feel that the clients feedback or suggestion isn’t the best solution, explain to the client why and come to a middle ground. design involves working within various constraints and a little bit of negotiation at times. i’d love to hear other thoughts and opinions on this topic! as i play mainly within the digital product design space, these are things that i’ve observed over time and have worked for me.       33 prototyping, ux design, front end development and beyond 👾 | ✍️ write for us https://bit.ly/apply prototypr designer. tinkerer. likely wearing a black shirt. help status about careers press blog privacy terms text to speech teams

why the heck don't companies make better decisions? 3 best practices for high performance decision making teams the 10 minute no pain, no gain secret to better decisions you need to decide, but there’s no momentum. you want to make the right choice, but the team isn’t seeing eye to eye. you’re worried about getting buy in no matter what path you take. this is why you’re in the job. it’s time to stand up and make things happen. a sure way to pump energy into your decision making is to consider more alternatives. amazingly, one study found that 40% of business decision makers only consider whether to do a single alternative. another 55% only considered two choices. and even though there might not seem like much difference between one and two choices, it was enough for them to make 6 times as many good decisions! another study found that it was enough to cut failures in half. so if you want to be better than 95% of managers, make 6 times as many good decisions, and cut your failures in half, all you have to do is come up with three real alternatives. really want to nail it? go for four. does four sound like too big a number? dig in and try these 5 tricks for generating more choices: and while you’re at it, check in with your team and always be ready to step back and ask yourself: are we solving the right problem? when you are clear on what matters and are asking the right questions, the alternatives you come up with will make your direction clear. we saw this happen with our team just the other day. we’ve been considering switching from flowdock to slack for team collaboration. for months. it was just hanging out there, important but not urgent. finally, this week our cto took the reins and put the decision into cloverpop so the whole team (trick #5) could get clear on the problem we’re trying to solve (trick #4) and brainstorm alternatives. we’ve used flowdock for a long time   it’s great for engineering teams, which makes some reluctant to switch. but our business is growing beyond just engineering, and we’re also going to integrate our product with slack. so we came up with five choices, and looking at them together made our decision clear. we aren’t going to stay solely on flowdock, or move to some other product like hipchat (trick #3). just trying slack out (trick #2), or using both at the same time (trick #1) seemed pointless. so we decided the best choice was to move over to slack full steam ahead. in retrospect, it seems so simple. the right decision always seems that way. so if you want to put more great decisions in your rearview mirror, get smart and add more choices to the list. want to improve your decision making performance? cloverpop is a decision app for business   easy to use, collaborative and based on decision science best practices. imagine asking the right questions, making the right decisions and getting the right people bought in, every time. sign up for the preview today. why the heck don't companies make better decisions? 3 best practices for high performance decision making teams the 10 minute no pain, no gain secret to better decisions 3 best practices for high performance decision making teams the 10 minute no pain, no gain secret to better decisions

enago academy   learn. share. discuss. publish. table of contents statistical tests are a way of mathematically determining whether two sets of data are significantly different from each other. to do this, statistical tests use several statistical measures, such as the mean, standard deviation, and coefficient of variation. once the statistical measures are calculated, the statistical test will then compare them to a set of predetermined criteria. if the data meet the criteria, the statistical test will conclude that there is a significant difference between the two sets of data. there are various statistical tests that can be used, depending on the type of data being analyzed. however, some of the most common statistical tests are t tests, chi squared tests, and anova tests. when working with statistical data, several tools can be used to analyze the information. parametric statistical tests have precise requirements compared with non parametric tests. also, they make a strong inference from the data. furthermore, they can only be conducted with data that adhere to common assumptions of statistical tests. some common types of parametric tests are regression tests, comparison tests, and correlation tests. regression tests determine cause and effect relationships. they can be used to estimate the effect of one or more continuous variables on another variable. comparison tests determine the differences among the group means. they can be used to test the effect of a categorical variable on the mean value of other characteristics. one of the most common statistical tests is the t test, which is used to compare the means of two groups (e.g. the average heights of men and women). you can use the t test when you are not aware of the population parameters (mean and standard deviation). it tests the difference between two variables from the same population (pre and post test scores). for example, measuring the performance score of the trainee before and after the completion of the training program. the independent t test is also called the two sample t test. it is a statistical test that determines whether there is a statistically significant difference between the means in two unrelated groups. for example, comparing cancer patients and pregnant women in a population. in this test, the mean of a single group is compared with the given mean. for example, determining the increase and decrease in sales in the given average sales. anova (analysis of variance) analyzes the difference between the means of more than two groups. one way anovas determine how one factor impacts another, whereas two way analyses compare samples with different variables. it determines the impact of one or more factors by comparing the means of different samples. manova, which stands for multivariate analysis of variance, provides regression analysis and analysis of variance for multiple dependent variables by one or more factor variables or covariates. also, it examines the statistical difference between one continuous dependent variable and an independent grouping variable. it is a statistical test that determines whether two population means are different, provided the variances are known and the sample size is large. correlation tests check if the variables are related without hypothesizing a cause and effect relationship. these tests can be used to check if the two variables you want to use in a multiple regression test are correlated. it is a common way of measuring the linear correlation. the coefficient is a number between  1 and 1 and determines the strength and direction of the relationship between two variables. the change in one variable changes the course of another variable change in the same direction. non parametric tests do not make as many assumptions about the data compared to parametric tests. they are useful when one or more of the common statistical assumptions are violated. however, these inferences are not as accurate as with parametric tests. the chi square test compares two categorical variables. furthermore, calculating the chi square statistic value and comparing it with a critical value from the chi square distribution allows you to assess whether the observed frequency is significantly different from the expected frequency. the decision for a statistical test depends on the research question that needs to be answered. additionally, the research questions will help you formulate the data structure and research design. after defining the research question, you could develop a null hypothesis. a null hypothesis suggests that no statistical significance exists in the expected observations. before performing the study protocol, a level of significance is specified. the level of significance determines the statistical importance, which defines the acceptance or rejection of the null hypothesis. you must decide if your study should be a one tailed or two tailed test. if you have clear evidence where the statistics are leading in one direction, you must perform one tailed tests. however, if there is no particular direction of the expected difference, you must perform a two tailed test. statistical tests and procedures are divided according to the number of variables that are designed to analyze. therefore, while choosing the test , you must consider how many variables you want to analyze. it is important to define whether your data is continuous, categorical, or binary. in the case of continuous data, you must also check if the data are normally distributed or skewed, to further define which statistical test to consider. a paired design includes comparison studies where the two population means are compared when the two samples depend on each other. in an unpaired or independent study design, the results of the two samples are grouped and then compared. now that you know the seven steps for choosing a statistical test, you are on your way to finding the right test for your research question. each situation is unique; it is important to understand all of your options and make an informed decision. remember to always consult with your principal investigator or statistician, or software, if you are unsure which test to choose. we would love to hear from you on how you choose a statistical test for your research. write to us or leave a comment below. a statistical test is a tool or procedure used in data analysis to determine the likelihood of observing certain patterns, relationships, or differences in a dataset by chance alone. it helps researchers draw conclusions about the population based on sample data. statistical tests involve mathematical calculations and hypothesis testing to assess the significance of results and make inferences about the underlying population. a test statistic is a numerical value calculated from sample data in a statistical hypothesis test. it is used to assess the evidence against a null hypothesis and make inferences about the population. statistical significance refers to the probability that an observed difference or relationship in data is not due to random chance alone. it is a measure of the confidence we can place in the results of a statistical analysis. the selection of a statistical test depends on the specific details of your research question and data. it is important to choose a test that aligns with the nature of your data, the type of comparison you want to make, and any specific assumptions or conditions that need to be met. here are some essential things to consider while choosing the right statistical test: 1. research question 2. formulation of null hypothesis 3. level of significance in study protocol 4. the decision between one tailed and two tailed 5. the number of variables to be analyzed 6. type of data 7. paired and unpaired study designs when conducting a statistical test, the goal is often to determine whether the observed data provides strong evidence to support or reject a specific hypothesis. statistical significance helps assess the strength of that evidence. if the p value associated with a statistical test is below a predetermined significance level (commonly denoted as α, often set at 0.05), we consider the result to be statistically significant. it implies that there is evidence supporting an alternative hypothesis or a meaningful relationship in the data. on the other hand, if the p value exceeds the significance level, we fail to reject the null hypothesis due to insufficient evidence. very clear and concise information. thanks very concise, simple and easy to understand information. good job indeed! very informative! very clear and understandable the explanations are easy to understand and i hope it will help the students to have a clear conception about different steps. best regards. your email address will not be published. δdocument.getelementbyid( "ak_js_1" ).setattribute( "value", ( new date() ).gettime() ); statistical tools provide a framework for accurate data interpretation. this makes them an indispensable element… dr. sarah chen stared at her computer screen, her eyes staring at her recently published… research paper retractions represent a critical event in the scientific community. when a published article… google has released its 2024 scholar metrics, assessing scholarly articles from 2019 to 2023. this… academic integrity is the foundation upon which the credibility and value of scientific findings are… simplifying statistics: how and when to use correlation and regression? how to optimize your research process: a step by step guide breaking barriers: sony and nature unveil “women in technology award” choosing the right analytical approach: thematic analysis vs. content analysis for… the average mean age of the study group was 54.2 years (range: 8‒90 years). however, this method is novel and is very much considerably different from the classical method. substance abuse use disorder has been a major public health concern. try now! it’s free! delivered within minutes! starting at just $12 check plagiarism ready to connect with explore now jquery(document).ready(function () { jquery(".scholarly writers box img").map(function(){ jquery(this).removeattr("srcset"); }) }); president of the ease, development editor of reproductive biomedicine online journal editor and researcher at the national astronomical observatories, chinese academy of sciences chair & professor, department of physiology and pathophysiology, peking university health science center september 15, 2022·11:30   12:30 utc register now find us on: english editing   enago.com | 英文校正   enago.jp | 论文修改   enago.cn | 영어논문교정   enago.co.kr copyright © 2025   all rights reserved the content on this website is protected by copyright laws and is intended for human consumption only. any use of this content for artificial intelligence (ai), machine learning (ml), or similar purposes is strictly prohibited without prior written consent from the website owner. sign up to read more we hate spam too. we promise to protect your privacy and never spam you. get the app enago academy, the knowledge arm of enago, offers comprehensive and up to date scholarly resources for researchers, publishers, editors, and students to learn and share their experiences about research and publishing with the academic community. our author focused webinars and workshops primarily cater to the needs of esl authors, early stage researchers, and graduate students who want to know more about the issues pertinent to successful publication. read more english editing services | copy editing services | substantive editing services | publication support services | proofreading services copyright © 2025   all rights reserved glossary | privacy policy | terms & conditions | contact us i am looking for editing/ proofreading services for my manuscript tentative date of next journal submission: δdocument.getelementbyid( "ak_js_2" ).setattribute( "value", ( new 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usability testing do i build a mockup page and advertise it on the right side of the facebook page, along with other ads? do i make a survey of potential customers to see if they're willing to pay for the app (surveymonkey, or smtg else?)? should i build at least mvp to give potential customers a taste test? thanks. 5 answers business strategist & conversion expert you're on the right track. i'm glad to see you getting the steps in the right order. who are potential users of your product? what problem(s) will your app potentially be solving for them? how much do these potential users value the solution of these problems? find your user group of people who would pay for a solution to a problem your app will solve. get their input. i would do this through a couple stages...the first involving live talking, and the second usage of a basic version of the app once you and they have figured out what its purpose is. answered over 9 years ago content marketing advisor & agency consultant talk to people. talk about your idea, genuinely listen to their comments and feedback. once you've done that, build your mvp and always be testing. always be gathering feedback. i don't think the fb ads will work because there is nothing of value to the end user. happy to help more, book a call and we can discuss a strategy to get your app to market.  shaun answered over 9 years ago startup consultant & sales ninja that is a great question and one that many, many people ponder about. "if i build it will they come?" i have built over 10 mvp's and did some basic testing to see if i could validate the service. my suggestion would be to put together just enough of an mvp or test site to get your point or value prop across. then i would set a budget for ads or facebook or some targeted demographic marketing and test the feedback and the conversions. you can actually fake it till you make it. you do not have to always deliver on what you are building. i can speak more to this in a phone call if you want...   jj answered over 9 years ago start up founder, ex amazonian, uc berkeley alum it depends on the specific context of what you're trying to build, but i'd say that one of the best ways to initially test if there's customer demand for your idea is to see if people are already trying to solve the problem you've identified through some other means. to give you an example: let's say you want to build an app that helps businesses pre screen candidates for interviewing    how do businesses solve the problem today? well, the hiring manager / hr team might do their own research by calling people who know the candidate and asking for feedback. or the business might hire a headhunting firm to do this for them. if people are already be paying someone to solve this specific problem for them, it's a good indicator that your idea might be worth something (provided you can come up with a better solution). however, even if people are not currently paying someone to get their problem solved (but the pain point still exists, and people are still coming up with solutions of their own) it might be worth evaluating to see if you can come up with a solution + a business model that might work. i hope this is helpful and let me know if you'd like any additional feedback! answered over 9 years ago content writer, social media specialist surveys are a great way to test the demand for your product or app. they provide a wide range of tools and features for measuring responses, so you can really do as much or as little as you want with the results. one option that doesn't require any design skills and also creates beautiful surveys is fieldboom (http://www.fieldboom.com/), which can create online forms and surveys in less than five minutes. you can analyze responses one by one and also tag them with labels, star them and mark them as read or unread (just like gmail). you can also use the simple but powerful reports to understand trends in the feedback you’re receiving. no matter what survey option you go with, be sure to try it out before moving forward: you want to find the one that works best for you. answered about 8 years ago

communities for your favorite technologies. explore all collectives ask questions, find answers and collaborate at work with stack overflow for teams. ask questions, find answers and collaborate at work with stack overflow for teams. explore teams find centralized, trusted content and collaborate around the technologies you use most. teams q&a for work connect and share knowledge within a single location that is structured and easy to search. get early access and see previews of new features. so i've recently started using weka and there are several test options when building a tree with, for example, j48. the following are the options, including my undestanding of them: what i want to know is what exactly is the training set (first option) and what it does. where does it get this training set from and what data does it test on exactly? and also if you could correct my understanding of the rest, if it's wrong. the first option simply means "use all data loaded to run this algorithm". you choose this option one is: test set = training set the resulting scores will be prone to overfitting of course, and that is why its "highly optimistic and not necessarily useful". reminder: answers generated by artificial intelligence tools are not allowed on stack overflow. learn more thanks for contributing an answer to stack overflow! but avoid … to learn more, see our tips on writing great answers. required, but never shown required, but never shown by clicking “post your answer”, you agree to our terms of service and acknowledge you have read our privacy policy. site design / logo © 2025 stack exchange inc; user contributions licensed under cc by sa . rev 2025.2.6.22204

sign up sign in sign up sign in member only story samuele mazzanti follow towards data science    6 share data scientists are always focused on finding the best model for their dataset. however, they often overlook the importance of choosing the best performance estimation method. this is unfortunate because estimating a mae of, say, 5.2 on your test set is useless if you are not reasonably sure that the mae will be actually close to 5.2 on future data. the topic of performance estimation is particularly critical when dealing with forecasts. differently from other applications, in time series the order of observations matters, so we cannot just go for cross validation and assume it will work fine. this is why many performance estimation methods have been proposed in the literature. in this article, we will compare 12 of these methods on 58 real time series datasets. the results are surprising. a time series is the observation of one or more variables at different points in time. this implies that, unlike other kinds of datasets, the observations have an inherent order.       6 your home for data science and ai. the world’s leading publication for data science, data analytics, data engineering, machine learning, and artificial intelligence professionals. applied scientist @ yelp | i write about data science in the real world | opinions are my own help status about careers press blog privacy terms text to speech teams

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by shankha basu and krishna savani we make thousands of decisions every day. some are fairly simple   we decide when to wake up, what to have for breakfast, what to wear to work, which email to reply to   while others are more complex, requiring us to weigh different options. for example, when buying a laptop, we want to compare different models to find the best one for our budget; when choosing a retirement plan, we compare options to find one with the highest returns for our risk appetite; and when hiring, we compare multiple applicants to identify the best candidate. explore hbr hbr store about hbr manage my account follow hbr harvard business publishing: copyright ©2025 harvard business school publishing. all rights reserved. harvard business publishing is an affiliate of harvard business school.

 we spent thousands of hours testing 120 mattresses over an eight year period to determine the best mattresses of 2025. after evaluating the performance of each contender and comparing notes with our expert product testers, we named the helix midnight luxe the best mattress overall. its medium firm feel, plush pillow top and breathable construction make it suitable for most sleep styles meaning we think just about anyone could be happy with this bed in their home. for more specific sleep needs, we have tailored suggestions for hot sleepers, couples and those who struggle with health concerns such as back pain. we tested over 100 options to find the best mattresses for every sleep style and budget. to gain as well rounded of a perspective as possible, we also consulted industry experts and team members who sleep on these beds in their homes every night. all 12 of our picks are vetted against a rigorous testing criteria, which includes sleeping on each mattress for at least 30 nights and evaluating the bed’s firmness, support and comfort, among other factors. our recommendations are either bed in a box mattresses or come with white glove delivery so you don’t have to wrestle with a heavy mattress yourself. while our list is comprised of our top picks from 2024, we stand by our research and will continue to test and re test mattress models in the new year. helix sleep / instagram type: hybrid | brand firmness rating: medium to medium firm (5 to 6) | height: 13.5 inches | shipping: free (in a box) | trial: 100 nights | warranty: 15 years best for: skip if : we chose the helix midnight luxe as the best mattress overall because it tested well across several key categories like pressure relief, responsiveness and edge support. it also has a medium to medium firm feel and several cooling layers, which appeal to a variety of preferences and sleep positions including side, back and combination sleeping, as well as couples. we could’ve chosen it for several of the superlatives on this list, which shows how versatile it is.