Use the following returns for X and Y. Returns Year 1 2 3 4 5 22.4% - 17.4 10.4 20.8 5.4 Y 28.2% 4.4 30.2 - 15.8 34.2 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.) Y 8.32% 14.48% a. Average return b. Variance 524.392000 257.092000 16.03% c. Standard deviation 22.90%