Year 12345 Returns X 18% 21 12 -14 10 Y 15% 33 14 -19 23 Average returns Variances Standard deviations 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, and round the variance answers to 5 decimal places, e.g., .16161.) X % % Y % %