You've observed the following returns on Pine Computer's stock over the past five years:

$14$ percent, $-7$ percent, $17$ percent, $15$ percent, and $10$ percent.

a$.$ What was the arithmetic average return on the company's stock over this five$-$year

period? $($Do not round Intermedlete calculetlons and enter your answer as a

percent rounded to $1$ declmel plece, e$.$g$.,32\mathrm{.}1.)$

b$-1.$ What was the variance of the company's returns over this period? $($Do not round

Intermedlete calculetions and round your answer to $5$ declmel places, e$.$g$.,$

$\mathrm{.}16181.)$

b$-2.$ What was the standard deviation of the company's returns over this period? $($Do not

round Intermedlate calculations and enter your answer as a percent rounded to $2$

declmal places, e$.$g$.,32\mathrm{.}16.)$

Answer is complete but not entirely correct.