The following spreadsheet contains monthly returns for Cola Co$.$ and Gas Co$.$ for $2022$: Using these data, estimate the average monthly return and the volatility for each stock.

The average monthly return for Cola Co$.$ is

$\%.($Round to two decimal places.$)$

Data table

$($Click on the following icon in order to copy its contents into a spreadsheet.$)$

$\backslash$table$[[$Date$,$Cola Co$.,$Gas Co$.],[$Jan$,2\mathrm{.}10\%,8\mathrm{.}20\%$