2.00 points P12-7 Calculating Returns and Variability [LO1 Using the following returns, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y Returns 15% 20% 23 24 -21 49 Requirement 1 a) Calculate the arithmetic average return for X b)Calculate the arithmetic average return for Y to select) Requirement 2: Calculate the variance for X. (Do not round intermediate calculations.) to select) Calculate the variance for Y. (Do not round intermediate calculations.) to select) Requirement 3: Calculate the standard deviation for X. (Do not round intermediate o calculations.) to select) Calculate the standard deviation for Y. (Do not round intermediate calculations.) to select)