4. value: 10.00 points Returns Year 1 2 3 4 5 13 % 27 8 20 10 18 % 28 10 - 25 19 Using the returns shown above, calculate the arithmetic average returns, the variances, and the sta deviations for X and Y. (Do not round intermediate calculations. Enter your average retur standard deviation as a percent rounded to 2 decimal places, e.g., 32.16, and round the varian decimal places, e.g., 32.16161.) X Y Average return 8,60 % 13.80% Variance .011 03 Standard deviation 10.5% 17.53%