Problem 10-7 Calculating Returns and Variability [LO 1] Use the following returns for X and Y. Returns Year 12345 21.8% 26.4% 2 -16.8 3.8 9.8 28.4 19.6 14.6 4.8 32.4 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 Y % % b. Variance c. Standard deviation % %