Year 1 2 3 4 5 Returns 13 % 23 % 16 28 11 - 12 12 15 10 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. Enter your variance answers rounded to 5 decimal places, e.g., .16161.) Y % % Average returns Variances Standard deviations % %