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

Year	1	2	3	4
Return	3.9%	28.5%	11.9%	4.4%

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.)