The last four years of returns for a stock are as 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.

Year Return 1 -4.3% 2 + 28.1% 3 + 11.7% 4 + 3.6%