The average monthly return for Cola Co. is _____%?

The average monthly return for Gas Co. is _____%?

The volatility for Cola Co. is _____%?

The following spreadsheet contains monthly returns for Cola Co. and Gas Co. for 2013. Using Month Gas Co. January February March April May June July August September October November December Cola Co. - 2.10% 0.00% -2.00% 0.90% -3.10% - 8.40% - 11.90% - 1.60% 5.50% - 1.10% - 3.80% - 2.20% - 0.50% - 1.80% 2.80% 8.40% - 4.60% 8.20% 4.60% 3.00% 1.40% 2.90% 7.40%