Year 1. 2 Nm Returns Y 12 % 23 % 15 27 11 11 12 13 10 17 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.) x Y Average returns % % Variances Standard deviations % %