The last four years of returns for a stock are as shown here: a. What is the average annual return? b. What is the variance of the stock's returns? c. What is the standard deviation of the stock's returns? Note: Notice that the average return and standard deviation must be entered in percentage format. The variance must be entered in decimal format a. What is the average annual return? The average return is % (Round to two decimal places.) b. What is the variance of the stock's returns? OThe variance of the returns is (Round to five decimal places) c. What is the standard deviation of the stock's returns? IAS The standard deviation is % (Round to two decimal places) LILU percumaye format. The variance must be entered in decimal turn? Dund i Data Table cock's on oft (Click on the icon located on the top-right comer of the data table below in order to copy its contents into a spreadsheet) 2. (Ro| Year Return 228% +12% +39% Print Done of the answer boxes