You would be sampling units 4, 9, 14, 19, and so on to 100 and you would wind up with 20 units in your sample. In order for systematic sampling to work, it is essential that the units in the population be randomly ordered, at least with respect to the characteristics you are measuring.owever, if the goal is to learn about a large population, it is imperative to avoid judgment of nonprobabalistic samples in survey research. [Salant, p64] In contrast to probability sampling techniques, there is no way of knowing the accuracy of a non-probabilistic sample estimate.
Gender is another factor in resting heart rate norms because women at various fitness levels tend to. have higher pulse rates on average than men of comparable fitness levels. For example, the average. resting heart rate of an elite 30-year-old female athlete ranges from 54-59 beats per minute, while the. resting heart rate for men of the same age and fitness level ranges from 49-54.1. Keep in mind that many factors can influence heart rate, including:
An athletic male between the ages of 18 and 25 will often have a resting heart rate of 49 to 55 beats per minute. A person in this age group of below-average health might have a resting heart rate between 74 and 81 beats per minute, according to Top End Sports.his rate differs for men and women and varies according to other factors, such as your age and how active you are. Top End Sports notes a person's resting heart rate can often range from the high 40s to above 80 beats per minute.