Youve observed the following returns on Mary Ann Data Corporations 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 Mary Anns stock over this five-year period? (Do not round intermediate calculations and round your final answer to 2 decimal places. (e.g., 32.16))

Average return

%

b-1.	What was the variance of Mary Anns 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 Mary Anns returns over this period? (Do not round intermediate calculations and round your final answer to 2 decimal places. (e.g., 32.16))

Standard deviation

%