Year 1 2 3 4 5 11 % 29 18 -19 20 Y 20% 41 -9 -23 49 Requirement 1: (a)Calculate the arithmetic average return for X. (Click to select) (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) (b)Calculate the variance for Y. (Do not round intermediate calculations.) (Click to select) 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.)