Problem 12-7 Calculating Returns and Variability [LO1] Year X 12345 Returns Y 13% 23% 16 28 12 15 -11 10 -12 18 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.) X Y Average returns Variances 8.00% 14.40 % 10.84000 15.57000 Standard deviations 117.50% 242.30%