x P$($x$)$

$00\mathrm{.}30$

$10\mathrm{.}50$

$20\mathrm{.}10$

$30\mathrm{.}10$

The standard deviation of x is $\_\_\_\_\_\_\_\_\_.$

Question $1$ Answer

a$.$

$1\mathrm{.}09$

b$.$

$1\mathrm{.}00$

c$.$

$0\mathrm{.}80$

d$.$

$2\mathrm{.}00$

e$.$

$0\mathrm{.}89$