Question $14(10$ points$)$

The following stock with returns over the years is shown below:

$\backslash$table$[[$Year$,$Return $($percent$)],[1980,10],[1981,36],[1982,2],[1983,-3],[1984,11]]$

Find the average return:

$17\mathrm{.}80\%$

$15\mathrm{.}33\%$

$72\mathrm{.}78\%$

None of the above