BA519 Chapter 10 Help Save & Exit Submit Check my work 4 You've observed the following retums on Mary Ann Data Corporation's stock over the past five years: 19 percent, -13 percent, 16 percent, 21 percent, and 10 percent. 17.14 ports a. What was the arithmetic average return on Mary Ann's stock over this five-year period? (Do not round Intermediate calculations and round your final answer to 2 decimal places. (e.g., 32.16) 2048:38 Average return What was the variance of Mary Ann's returns over this period? (Do not round 1. intermediate calculations and round your answer to 5 decimal places. (e.g.. 32.16161)) Variance b- What was the standard deviation of Mary Ann's returns over this period? (Do not 2. round intermediate calculations and round your final answer to 2 decimal places, le.g. 32.16)) Standard deviation Me H