Use the following returns for X and Y Returns Year 2 4 28.5% -4.5 30.5 -16.0 34.5 22.5% 10.5 21.0 5.5 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.) Average retums Calculate the variances for Xand Y. (Do not round intermediate calculations and round your answers to 6 decimal places, e.g., 32.161616.) Variances 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.) Standard deviations