Problem 12-7 Calculating Returns and Variability (LOI) Year 1 2 3 4 5 Returns x Y 17% 22% 31 32 12 16 -24 -29 10 23 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, and round the variance answers to 5 decimal places, e.g., .16161.) Y Average returns % % Variances Standard deviations % %