You’ve observed the following returns on Crash-n-Burn Computer’s stock over the past five years: 17 percent, –15 percent, 19 percent, 29 percent, and 10 percent. What was the arithmetic average return on Crash-n-Burn’s stock over this five-year period? What was the variance of Crash-n-Burn’s returns over this period? What was the standard deviation of Crash-n-Burn’s returns over this period?