$($Expected return and risk$)$ The following data represent returns for the common stocks over a one$-$year period.

$\backslash$table$[[$Probability$,\backslash$table$[[$Returns$],[$Google$]],],[0\mathrm{.}1,-20\%,$ATT$],[0\mathrm{.}2,8\mathrm{.}5\%,-10\%$