Returns Year X Y 1 12 % 23 % 2 15 27 3 11 11 4 12 13 5 10 17 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.) X Y Average return 7.20 % 13 % Variance Standard deviation 10.89 % 15.75 %