Returns Year X Y 1 13 % 18 % 2 27 28 3 -20 -25 4 8 10 5 10 19 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 answers as a percent rounded to 2 decimal places, e.g., 32.16. Enter your variance answers rounded to 5 decimal places, e.g., .16161.) Y 7.60% 10.00% Average returns Variances Standard deviations % %