The table below shows annual returns for stocks of companies X and Y. Calculate the arithmetic average returns. In addition, calculate their variances, as well as their standard deviations Returns Year 15 % 2 3 4 5 25 % 46 -13 -27 54 -23 24 Requirement 1: (a)The arithmetic average return of company X's stock is (Click to select) v (b)The arithmetic average return of company Y's stock is: (Click to select) v Requirement 2: The variance of company X's stock returns is: (Do not round intermediate calculations.) (Click to select) v The variance of company Y's stock returns is: (Do not round intermediate calculations.) (Click to select) v Requirement 3: The standard deviation of company X's stock returns is: (Do not round intermediate calculations.) (Click to select) v b) The standard deviation of company Y's stock returns is: (Do not round intermediate calculations.) (Click to select) v