Use the following returns for Xand Y Returns Year X 22.9% - 17.9 29.7% 4.9 10.9 31.7 21.8 5.9 -16.8 35.7 5 a. Calculate the average returns for Xand 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 Xand 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.g.. 32.16.) Average return a. b. Variance Standard deviation C. 234 Ln