Problem 12-7 Calculating Returns and Variability [LO1] Returns 11.11 points Year eBook 123 16% 20% 19 31 3 10 15 4 -8 -17 Hint 5 10 21 Print References 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.) Average returns Y % Variances Standard deviations % %