Question $17(10$ points$)$

The returns of a stock over four years is shown below:

Year

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

What is the arithmetic return?

$1\mathrm{.}10\%$

$10\mathrm{.}30\%$

$1\mathrm{.}25\%$

None of the above