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 Returns Y 9% 23 % 27 44 16 -13 -17 -27 18 52 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) (b) 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 (a) calculations.) (Click to select) (b) The standard deviation of company Y's stock returns is: (Do not round intermediate calculations.) Click to select)