You've observed the following returns on Regina Computer's stock over the past five years: 11%, 10%, 19%, 18%, and 10%.

a.What was the arithmetic average return on Regina's stock over this five-year period?(Round the final answer to 1 decimal place.)

Average return%

b-1.What was the variance of Regina's returns over this period?(Do not round intermediate calculations. Round the final answer to 5 decimal places.)

Variance

b-2.What was the standard deviation of Regina's returns over this period?(Do not round intermediate calculations. Round the final answer to 1 decimal place.)

Standard deviation%