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$,-1\mathrm{.}60\%,-5\mathrm{.}20\%$