The last four years of returns for a stock are shown here:

a$.$ What is the average annual return?

b$.$ What is the variance of the stock's returns?

c$.$ What is the standard deviation of the stock's returns?

Note: Notice that the average return and standard deviation must be entered in percentage format. The variance must be entered in decimal format

a$.$ What is the average annual return?

The average return is $10\mathrm{.}00\%.($Round to two decimal places.$)$

b$.$ What is the variance of the stock's returns?

The variance of the stock's retums is

$($Round to five decimal places.$)$

Data table

$($Click on the following icon in order to copy its contents into a spreadsheet.$)$

$\backslash$table$[[$Year$,1,2,3,4],[$Return$,-4\mathrm{.}00\%,+28\mathrm{.}00\%,+12\mathrm{.}00\%,+4\mathrm{.}00\%$