can someone help me with this practice question there is three parts to the question

The following spreadsheet contains monthly retums for Cola Co and Gas Co. for 2013. Using these data, estimate the average monthly return and the volatility for each stock Month January February March April May June July August September October November December Cola Co. 2.60% 0.10% 8 63% 1 90% 4.60% 2 30% -2 60% 9.10% 0.00% 0.40% -0.30% 12.70% Gas Co. -3.70% 7,60% 6.10% -0.10% -3.50% -0.60% 1.4096 6 10% 1.50% -2 70% -0.10% 7.00% The average monthly rotum for Cola Co is D Round to two decimal places