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Problem 10-7 Calculating Returns and Variability Returns Year X Y 19% 15% 22 34 ( D W N - - 15 - 20 8 14 10 24 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 answers as a percent rounded to 2 decimal places, e.g., 32.16. Enter your variance answers rounded to 5 decimal places, e.g., .16161.) X Y Average returns 8.80 % 13.40 Variances 211.70001 X 413.80001 X Standard deviations 14.55 % 20.34 %