Use the following returns for X and Y. Returns Year X Y 1 21.7% 26.1% 12345 -16.7 -3.7 9.7 28.1 19.4 -14.4 4.7 32.1 a. Calculate the average returns for X and Y. Note: 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. Note: Do not round intermediate calculations and round your answers to 6 decimal places, e.g., .161616. c. Calculate the standard deviations for X and Y. Note: Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16. a. Average return b. Variance c. Standard deviation X Y % % % %