4. Tl'e last four years of returns for a stock are as shown here: 4. a. What is the average annual return? b. What is the variance of the stock's returns? 0. What is the standard deviation of the stock's returns? Note: Notice that the average retLrn and standard deviation must be entered in percentage format. The variance must be entered in decimal format. Reewth''v Click the icon to see the Worked Solution {Formula Solution). a. What is the average annual return? The average retun is %. {Round to two decimal places.) b. What is the variance of the stock's returns? The variance of the returns is . {Round to five decimal places.) 0. What is the standard deviation of the stock's returns? The standard deviation is %. (Round to two decimal places.) 4: Data Table {Click on the icon l'osaieo' on the topright comer of the data table belowin order to copy its contents info a spreadsheet.) Year 1 2 3 4 Return 4.3% + 28.4% +11_B% + 3.8%