Use the following returns for X and Y. Returns Year 22.3% - 17.3 10.3 20.6 5.3 27.9% - 4.3 29.9 15.6 33.9 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.) Average return % b. Variance Standard deviation