Possible returnsProbability$7\%10\%8\%25\%10\%30\%12\%30\%15\%5\%$

$$

Question

What is the standard deviation of returns for the following possibilities?

Responses

$\mathrm{.}02085\%$

$\mathrm{.}02085\%$

$2085$

$2085$

$\mathrm{.}2085\%$

$\mathrm{.}2085\%$

$2\mathrm{.}085\%$