You’ve observed the following returns on Crash-n-Burn Computer’s stock over the past five years: 5 percent, -11 percent, 24 percent, 18 percent, and 17 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?