i only need the standard deviation

Your porffolio had the values in the following table for the four years listed a. Calculate your return for each year over the 4-year period. Then calculate the average return over the 4-year period b. Calculate the portfolio standard deviation. The return for 2016 is \%. (Round to two decimal places) The return for 2017 is % (Round to two decimal places.) The return for 2018 is % (Round to two decimal places) The return for 2019 is 294%. (Round to two decimal places) The average return is \% (Round to two decimal places) Data table (Click on the icon here in order to copy its contents of the data table below into a spreadsheet.) The standard deviation is \%. (Round to fro decimal places)