Using the following returns, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y Returns Year 15% 23 % 2 3 4 5 23 24 21 52 Requirement 1: (a)Calculate the arithmetic average return for X (Click to select) v (b)Calculate the arithmetic average return for Y (Click to select) Requirement 2: (a)Calculate the variance for X. (Do not round intermediate calculations.) (Click to select) v (b)Calculate the variance for Y. (Do not round intermediate calculations.) Click to select) v Requirement 3: (a)Calculate the standard deviation for X. (Do not round intermediate calculations.) (Click to select) (b)Calculate the standard deviation for Y. (Do not round intermediate calculations.) (Click to select)