Chapter 12 Homework Saved HE 30 points Year 1 2 3 4 5 Returns X Y 13 % 23% 16 28 12 15 11 12 10 18 mo eBook Print References Using the returns shown above, calculate the arithmetic average returns and the standard deviations for X and Y. (Do not round intermediate cal your average return and standard deviation as a percent rounded to 2 e.g., 32.16, and round the variance to 5 decimal places, e.g., .16161.) X % Average returns Variances Standard deviations