Problem 12-7 Calculating Returns and Variability [Lo1] Returns YearX 17% 31 12 4-24 10 22 % 32 16 29 23 2 3 5 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.) 0 Average returns Variances Standard deviations 0 0 0