The tast four years of returne foc a slock ave as shown here: a. What is the average anncal retum? b. What is the variance of the stock's relurns? c. What is the standard deviation of the stock's rehums? Note: Notice that the average relum and standard deviation must be entered in percentage format. The variance must be entered in decimal format. a. What is the average armual retum? The average return is 4. (Round to two decimal places.) Data table (Cick on the following icon Q in order to copy its contents inte a spreadsheet)