You've observed the following returns on Bamett Corporation's stock over the past five years:-24.6 percent, 13.4 percent, 29.8 percent, 2.2 percent, and 21.2 percent what was the arithmetic average return on the stock over this five-year penod? o not round intermediate calculations and enter your answer as a percent rounded t 2 decimal places, eg Arithmetic average return What was the variance of the returns over this period? (Do not round intermediate calculations and round your answer to 6 decimal places, e.g., 32.161616.) Variance What was the standard deviation of the returns over this period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g, 32.16.) Standard deviation 8.4 %