Returns X 15% 29 10 ear 22 % 30 10 4-2227 10 21 Using the returns shown above, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y. (Do not round intermediate calculations. Enter your average return and standard deviation as a percent rounded to 2 decimal places, e.g., 32.16, and round the variance to 5 decimal places, e.g., 32.16161.) 8.40 % 11.20% Average return Variance Standard deviation