The following spreadsheet contains monthly returns for Cola Month Co. and Gas Co. for 2013. Using these data, estimate the January average monthly return and the volatility for each stock. February March April May June July August September October November The average monthly return for Cola Co. is %. (Round to two decimal places.) Cola Co. - 7.10% -2.10% - 3.80% -4.10% 1.50% 1.20% - 21.10% - 14.50% - 28.80% 22.90% - 13.40% Gas Co. -8.10% -2.00% -2.60% -5.00% - 4.70% - 3.20% 6.70% -8.50% - 12.60% 16.50% - 6.10% The following spreadsheet contains monthly returns for Cola Month Co. and Gas Co. for 2013. Using these data, estimate the January average monthly return and the volatility for each stock. February March April May June July August September October November The average monthly return for Cola Co. is %. (Round to two decimal places.) Cola Co. - 7.10% -2.10% - 3.80% -4.10% 1.50% 1.20% - 21.10% - 14.50% - 28.80% 22.90% - 13.40% Gas Co. -8.10% -2.00% -2.60% -5.00% - 4.70% - 3.20% 6.70% -8.50% - 12.60% 16.50% - 6.10%