Returns Year X Y 1 11 % 23 % 2 15 26 3 10 11 4 13 14 5 10 16 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 6.6 % 12.4 % Variance Standard deviation