Use the following returns for X and Y. Returns Year 1 2 3 4 5 -NM 21.4% -16.4 9.4 18.8 4.4 Y 25.2% 3.4 27.2 13.8 31.2 a. Calculate the average returns for X and Y. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. Calculate the variances for X and Y. (Do not round intermediate calculations and round your answers to 6 decimal places, e.g., 32.161616.) C. Calculate the standard deviations for X and Y. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e. 32.16.) Y % % a. Average return b. Variance C. Standard deviation % % %