Use the following returns for X and Y. a. Calculate the arithmetic average returns for X and Y. Note: Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.9., 32.16 . b. Calculate the variances for X and Y. Note: Do not round intermediate calculations and round your answers to 6 decimal places, e.g. . 161616. c. Calculate the standard deviations for X and Y Note: Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimat places, e.g., 32:16