CCM 7 Plus Unit 7 Study Guide: Data Collection and Analysis Calculator Active Part 1: Identify the choice that best completes the statement or answers the question. Circle your final answer. 1) A random sample of which group would be 2) At Sunnyside Middle School, the librarian is best to survey about their experience learning trying to determine the interests of the students how to program computers? so she can purchase appropriate books with the money the PTA has donated. Which survey option would produce a random sample that could be A) Nursing students helpful to the librarian? B) Law students C) Architecture students A) Survey every third 6th grade student to D) Computer engineering students enter the school one morning B) Survey bus riders C) Survey 5 randomly selected students out of few 7th and 8th grade classes D) Survey 8 randomly selected students out of each homeroom 3) Kelly took a survey of two different sets of 100 4) A worker takes a random sample of 200 bolts students to see what their favorite ice cream and finds that 30 of them are either too long or toppings are and displayed the results in the too short, thus making them unusable. Estimate table below. the number of unusable bolts in a production of 17,000 bolts. A) 2,260 bolts B) 1,610 bolts What is the best inference that can be drawn C) 2,140 bolts based on the results? D) 2,550 bolts A) More students prefer caramel than sprinkles. B) No students like hot fudge. C) More students prefer hot fudge than caramel. D) More students prefer sprinkles than caramel and hot fudge combined. 6) The widths of five bushes, in inches, 5) Mr. Grant is comparing test scores of his 2nd selected at random from a park with 50 period and 4th period. The MAD of 2nd period is bushes are shown below: 3.2. The MAD of 4th period is 8.4. What is a 32, 45, 54, 72, 48 conclusion Mr. Grant can draw about the two Which is a reasonable prediction of the mean classes? width of all the bushes in the park? A) 4th period had the highest test score. B) 2nd period scored higher on the test overall. A) 4.65 C) 2nd period scores were relatively consistent B) 30 compared to 4th period. C) 51 D) 4th period scored higher on the test overall. D) 80
CCM 7 Plus Unit 7 Study Guide: Data Collection and Analysis Calculator Active Part 1: Identify the choice that best completes the statement or answers the question. Circle your final answer. 1) A random sample of which group would be best to survey about their experience learning how to program computers? A) Nursing students B) Law students C) Architecture students D) Computer engineering students 2) At Sunnyside Middle School, the librarian is trying to determine the interests of the students so she can purchase appropriate books with the money the PTA has donated. Which survey option would produce a random sample that could be helpful to the librarian? A) Survey every third 6th grade student to enter the school one morning B) Survey bus riders C) Survey 5 randomly selected students out of few 7th and 8th grade classes D) Survey 8 randomly selected students out of each homeroom 3) Kelly took a survey of two different sets of 100 students to see what their favorite ice cream toppings are and displayed the results in the table below. What is the best inference that can be drawn based on the results? A) More students prefer caramel than sprinkles. B) No students like hot fudge. C) More students prefer hot fudge than caramel. D) More students prefer sprinkles than caramel and hot fudge combined. 4) A worker takes a random sample of 200 bolts and finds that 30 of them are either too long or too short, thus making them unusable. Estimate the number of unusable bolts in a production of 17,000 bolts. A) 2,260 bolts B) 1,610 bolts C) 2,140 bolts D) 2,550 bolts 5) Mr. Grant is comparing test scores of his 2nd period and 4th period. The MAD of 2nd period is 3.2. The MAD of 4th period is 8.4. What is a conclusion Mr. Grant can draw about the two classes? A) 4th period had the highest test score. B) 2nd period scored higher on the test overall. C) 2nd period scores were relatively consistent compared to 4th period. D) 4th period scored higher on the test overall. 6) The widths of five bushes, in inches, selected at random from a park with 50 bushes are shown below: 32, 45, 54, 72, 48 Which is a reasonable prediction of the mean width of all the bushes in the park? A) 4.65 B) 30 C) 51 D) 80
unit_7_study_guide_statistics.docx