youve observed the following returns on Crash-n-Burn Computers stock over the past five years: 10 percent, -11 percent, 18 percent, 19 percent, 10 percent

Problem 12-9 Calculating Returns and Variability LO1 You've observed the following returns on Crash-n-Burn Computer's stock over the past five years 10 percent, -11 percent, 18 percent, 19 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. sb-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.. 3216.) a. Average return b-1. Varliance b-2. Standard deviation t bl 5 6 7 8