Returns Year X Y 1 15 % 21 % 2 26 36 3 7 13 4 13 26 5 11 15 Using the following returns, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y. (Do not round intermediate calculations. Round the percent answers to 2 decimal places. Round the variance answers to 5 decimal places.) X Y Average returns % % Variances Standard deviations % %