Year 1 2 3 4 5 Returns X Y 16 % 22 % 30 31 11 12 -23 -28 10 22 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 returns Variances Standard deviations 8.80 % 303.76000 17.42 % Y 11.80 432.16000 20.78 %