The last four years of returns for a stock are as follows:

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?

a$.$ What is the average annual return?

The average return is $10\mathrm{.}15\%.($Round to two decimal places.$)$

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

The variance of the returns is $.($Round to five decimal places.$)$

ANSWER B AND C