Year	1	2	3	4
Return	3.9%	+27.9%	+11.6%	+3.5%

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

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.

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.