2 Homework Returns Year 20% 2 3 4 5 16% 19 10 8 10 - 21 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.) ences X Y % Average returns Variances Standard deviations | %