You've observed the following returns on Yasmin Corporation's stock over the past five years: 11 percent, -10 percent, 19 percent, 18 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_______%

b-1What 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-2What 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______%