QUESTION $1$

Find the standard deviation for a security that has three one$-$year returns of $-6\%,8\%,$ and $17\%$ respectively.

$9\mathrm{.}46\%$

$5\mathrm{.}48\%$

$6\mathrm{.}57\%$

$4\mathrm{.}56\%$

$7\mathrm{.}89\%$