You've observed the following returns on Yasmin Corporation's stock over the past five years: 18 percent, -14 percent, 20 percent, 22 percent, and 10 percent.

a.What was the arithmetic average return on Yasmin'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 Yasmin's returns over this period?(Do not round intermediate calculations. Round your answer to 5 decimal places (e.g., 32.16161).)

Variance_____

b-2What was the standard deviation of Yasmin's 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_____%