Problem 12-7 Calculating Returns and Variability (LO1] Returns Year Y 1 14 % 20 % 2 17 29 3 8 15 4 - 10 -11 5 19 10 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.) Y % % Average returns Variances Standard deviations % %