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Unformatted text preview: symmetric. b. skewed right. * c. skewed left. Questions 6 – 9 refer to the following. An office manager wrote down the number of cups of coffee that each employee in the office drank at work in one month. The results for this population are as follows: 30 , 18 , 0 , 0 , 25 , 35, 42, 10 6. What is the interquartile range? a. 4.5 b. 10.5 c. 17.5 d. 35 * e. 42 7. Calculate the coefficient of variation. a. 2% b. .6 c. .7 d. 73.7% * e. 78.8% 2 8. What is the range? a. 3.5 b. 18 c. 19 d. 40 e. 42 * 9. What is the variance? a. 14.74 b. 15.76 c. 217.25 * d. 248.29 e. 300 10. A family has spent $10,000 to purchase some shares of stock to save for a daughter’s college education. They expect the stock’s annual rate of return to be about 7.5%. If this holds true, how many years will it take for the value of this investment grow to $30,000? 15.19 years 3...
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 Fall '08
 HUDGINS
 Standard Deviation, relative frequency, A. B.

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