1)

2)

You've observed the following returns on Pine Computer's stock over the past five years: 15 percent, -15 percent, 17 percent, 27 percent, and 10 percent. a. What was the arithmetic average return on the company's stock over this five-year period? (Do not round intermediate calculations and enter your answer as a percent rounded to 1 decimal place, e.g., 32.1.) b-1. What was the variance of the company's returns over this period? (Do not round intermediate calculations and round your answer to 5 decimal places, e.g., .16161.) b-2. What was the standard deviation of the company's returns over this period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) % a. Average return b-1. Variance b-2. Standard deviation % Year 1 2 3 4 5 Returns Y 17% 22% 31 32 12 16 -24 -29 10 23 Using the returns shown above, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y. (Do not round intermediate calculations. Enter your average return and standard deviation answers as a percent rounded to 2 decimal places, e.g., 32.16, and round the variance answers to 5 decimal places, e.g., .16161.) X Y % % Average returns Variances Standard deviations % %