Returns Year X Y 1 20 % 15 % 23 2 35 3 14 4 16 - 21 10 25 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., .16161.) X Y Average returns % Variances Standard deviations %