Returns Year X Y 12% 25% 2 28 34 3 9 13 4 - 7 -27 5 10 14 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 return Variance Standard deviation