You've observed the following returns on Barnett Corporation's stock over the past five years:-27.9 percent, 15.6 percent, 34.2 percent, 3.3 percent, and 22.3 percent. tion's stock over the past five years:-27.9 percent, 15.6 percent What was the arithmetic average return on the stock over this five-year period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g. 32.16.) 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. 9.5 % 32.16.) Standard deviation