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

Year: 1 2 3 4

Return: -4.5% 27.9% 11.5% 4.2%

.

a. What is the average annualreturn?

b. What is the variance of thestock's returns?

c. What is the standard deviation of thestock'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.