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

Year	1	2	3	4
Return	3.7%	28.4%	11.7%	3.9%

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?

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Part 1

a. What is the average annual return?

The average return is

enter your response here%.

(Round to two decimal places.)

Part 2

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

The variance of the returns is

enter your response here.

(Round to five decimal places.)

Part 3

c. What is the standard deviation of the stock's returns?

The standard deviation is

enter your response here%.

(Round to two decimal places.)