Youve observed the following returns on Mary Ann Data Corporations stock over the past five years: 42.50 percent, 24.50 percent, 27.50 percent, 29.50 percent, and 16.50 percent.

a. What was the arithmetic average return on Mary Anns stock over this five-year period? (Do not round intermediate calculations. Round the final answer to 2 decimal places.)

Arithmetic average return %

b-1. What was the variance of Mary Anns returns over this period? (Do not round intermediate calculations. Round the final answer to 6 decimal places.)

Variance

b-2. What was the standard deviation? (Do not round intermediate calculations. Round the final answer to 2 decimal places.)

Standard deviation %