Stats

ISWER ALL QUESTIONS! SHOW WORK ON SEPARATE SHEET OF PAPER! Name: SThat Hasson THIS WILL BE OLLECTED AT END OF PERIOD! ! It Date: Period: CO AP PRACTICE WS 1. A back to back stem and leaf plot compares the heights of the players of two basketball teams. All heights in the plot below are in inches. Team A Team B a. The means of the two distributions are the same. b. The medians of the two distributions are the same. 6 89 C. The ranges of the two distributions are the same. 1444589 7 2366689 The distributions have the same number of observations. e . None of the statements above is correct. 1124 8 256 2. A nutritional consulting company is trying to find what percentage of the population of a town is overweight. The marketing department of the company contacts by telephone 600 people from a list of the entire town's population. All 100 people give answers to the survey. Which of the following is the most significant source of bias in this survey? Size of sample. b. Undercoverage. c. Voluntary response bias d. Nonresponse. e. Response bias. 3. Which of the following 1. All bell-shaped distributions are symmetric. are true statements: Il. Bar charts are useful to describe quantitative data. Ill. Cumulative frequency plots are useful to describe quantitative data. a. Ionly. b. I and ll only. c. II and Ill only. d. I and Ill only. e. I, II and III. 4. The mean number of points per game scored by basketball players during a high school championship is 9.4, and the standard deviation is 1.5. Assuming that the number of points are normally distributed, what number of points per game will place a player in the top 15% players taking part in the basketball championship? 9.10 points per game b. 10.57 points per game c. 10.95 points per game a