Standard deviation measures

risk while beta measures

risk,

unsystematic; systematic

systematic; unsystematic

asset$-$specific; market

total; unsystematic

total; systematic

If you earn an annual interest rate of $9\mathrm{.}5$ percent, how many years will it take to quadruple, $4x,$ your money?

$12\mathrm{.}22$ years

$14\mathrm{.}10$ years

$15\mathrm{.}28$ years

$13\mathrm{.}89$ years

$13\mathrm{.}37$ years