Use the following returns for X and Y. Returns Year 12345 X 22.1% 27.3% 2 17.1 - 4.1 10.1 29.3 20.2 - 15.2 5.1 33.3 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.g., 32.16.) a. Average return 8.08 % 14.12% b. Variance c. Standard deviation) % %