Quiz 1 FA 06 KEY

# Quiz 1 FA 06 KEY - Name ID KEY ECON 2843 Fall 2006 Quiz 1...

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Name KEY ID ECON 2843 Fall 2006 Quiz 1 Students must show all work on problems that involve calculation, even if the question is multiple choice. Questions 1 through 4 refer to the following: Average points scored per game were found for a sample size of 12 for 2005 NBA basketball players and classified as follows: cumulative Average points scored relative per game frequency 0 – 5 1/6 5 – 10 7/12 10 – 15 5/6 15 – 20 1 1. What is the mean points per game for this sample? a. 8 b. 9.5833 * c. 11.2956 d. 23 e. 40 2. What is the variance of the points per game for this sample? a. 4.77 b. 4.98 c. 22.74 d. 24.81 * e. 272.92

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3. If one of the sample observations is selected randomly, what is the probability that the player will score less points per game than the median class? a. 1/6 * b. 3/7 c. 3/5 d. 2/3 e. 5/6 4. What is the cumulative frequency of the class 10 – 15 ? a. 5/6 b. 3 c. 10 * d. 12 e. 31 5. The sample distribution appears to be a. symmetric. b. skewed right.
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Quiz 1 FA 06 KEY - Name ID KEY ECON 2843 Fall 2006 Quiz 1...

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