Youve observed the following returns on Mary Ann Data Corporations stock over the past five years: 44.00 percent, 26.00 percent, 29.00 percent, 31.00 percent, and 18.00 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- ?%