need help wity finding the average monthly return and volatility for each stock

The following spreadsheet contains monthly returns for Cola Co. and Gas Co. for 2022 . Using these data, estmate the average monthly roturn and the volatility for each stock. The average mnthly return for ColsCO : is K. (Round to two decimal places.) Data table (Click on the following icon O : in onder to copy its contents into a spreadsheet) The following spreadsheet contains monthly returns for Cola Co. and Gas Co. for 2022 . Using these data, estmate the average monthly roturn and the volatility for each stock. The average mnthly return for ColsCO : is K. (Round to two decimal places.) Data table (Click on the following icon O : in onder to copy its contents into a spreadsheet)