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. Year 1 2 3 4 5 Returns Y 9% 19 % 27 40 16 -13 -17 -27 18 48 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 (a) 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 intermediate (a) calculations.) The standard deviation of company Y's stock returns is: (Do not round intermediate (b) calculations.) (Click to select)