Using the data in the following table, estimate the average return and volatility for each stock.

The return of stock A is $\backslash (2\mathrm{.}83\backslash \%\backslash ).($Round to two decimal places.$)$ The return of stock B is $\backslash (10\mathrm{.}83\backslash \%\backslash ).($Round to two decimal places.$)$ The variance of stock $\backslash ($ A $\backslash )$ is $??$

$($Round to five decimal places.$)$