Year 2 3 4 Returns X Y 11 % 18 % 25 26 11 10 - 18 -23 1017 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., 32.16161.) % % Average return Variance Standard deviation