Calculating Returns and Variability. Returns Year X Y 1 17 % 23 % 2 22 34 3 8 11 4 – 15 – 32 5 10 21 Using the returns shown above, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y. (Round your percent answers to 2 decimal places. (e.g., 32.16) and variances to 5 decimal places. (e.g., 32.16161))