Use the following returns for X and Y. Returns Year 1 2 3 4 22.1% - 17.1 10.1 20.2 5.1 Y 27.3% 4.1 29.3 15.2 33.3 a. Calculate the average returns for X and Y. (Do not round intermedia and enter your answers as a percent rounded to 2 decimal places b. Calculate the variances for X and Y. (Do not round intermediate cal round your answers to 6 decimal places, e.g., 32.161616.) c. Calculate the standard deviations for X and Y. (Do not round interm calculations and enter your answers as a percent rounded to 2 de 32.16.) X Y a. Average return % % b. Variance C. Standard deviation % %