The following spreadsheet contains monthly returns for Cola Co. and Gas Co. for 2013. Using these data, estimate the average monthly return and the volatility for each stock.

Month	Cola Co.	Gas Co.
January	2.60%	3.70%
February	0.10%	7.60%
March	8.63%	6.10%
April	1.90%	0.10%
May	4.60%	3.50%
June	2.30%	0.60%
July	2.60%	1.40%
August	9.10%	6.10%
September	0.00%	1.50%
October	0.40%	2.70%
November	0.30%	0.10%
December	12.70%	7.00%

The average monthly return for Cola Co. is _%