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 20% 41 -10 24 49 -23 24 Requirement 1: (a)The arithmetic average return of company X's stock is (Click to select (b)The arithmetic average return of company Y's stock is (Click to select) Requirement 2: The variance of company X's stock returns is: (Do not round intermediate calculations.) (Click to select) The variance of company Y's stock returns is: (Do not round intermediate calculations.) (Click to select) Requirement 3: The standard deviation of company X's stock returns is: (Do not round intermediate calculations.) (Click to select) The standard deviation of company Y's stock returns is: (Do not round intermediate calculations.) (Click to select)