Returns Year X 18 % 2 32 33 3 8 18 4 -25 -30 5 10 24 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.) Average returns Variances Standard deviations