Use the following returns for X and Y. Returns Year 22.0% 27.0% - 17.0 - 4.0 10.0 29.0 20.0 - 15.0 5.0 33.0 mtu 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.) Answer is complete but not entirely correct. % % Average return Variance Standard deviation 8.00 3.954301 15.64 14.00 4.680695 21.91 % %