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 standa Heviations Returns Year 1 2 3 4 5 15 % 33 22 -23 ) 22 % 43 -12 -26 51 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: la) 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 b) "calculations.) (Click to select) Requirement 3: The standard deviation of company X's stock returns is: (Do not round intermedia calculations.) (Click to select) The standard deviation of company Y's stock returns is: (Do not round intermedia b) calculations.)