You’ve observed the following returns on Yasmin Corporation’s stock over the past five years: 19 percent, –13 percent, 16 percent, 21 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. Enter your answer as a percent rounded to 1 decimal place, e.g., 32.1.)

Average return            {C} {C}{C} %

b-1 What was the variance of the company's stock returns over this period? (Do not round intermediate calculations and round your answer to 5 decimal places, e.g., 32.16161.)

Variance           

b-2 What was the standard deviation of the company's stock returns over this period? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

Standard deviation            %