Problem 12-7 Calculating Returns and Variability (LO1] Returns Year X Y 1 17 % 20% 2 20 32 311 - 4 5 7 10 - 18 22 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.) 1% Average returns Variances Standard deviations