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

Year 1 2 3 4

Return -3.8% 27.6% 12.4% 4.5%

.

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.