9. Calculating Returns and Variability (LO1) You've observed the following returns on Regina Computer's stock over the past five years: 7%, -12%, 11%, 38%, and 14%. a. What was the arithmetic average return on Regina's stock over this five-year period? b. What was the variance of Regina's returns over this period? The standard deviation?

9. Calculating Returns and Variability (LO1) You've observed the following returns on Regina Computer's stock over the past five years: 7%,12%,11%,38%, and 14%. a. What was the arithmetic average return on Regina's stock over this five-year period? b. What was the variance of Regina's returns over this period? The standard deviation