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

Year	1	2	3	4
Return	4.1%	27.8%	12.4%	4.3%

a. What is the average annual return?

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

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

Note: Enter your answers for the average return and standard deviation as percentages. For the variance, enter your answer as a decimal number.

a. The average return is

().

(Enter your response as a percent rounded to two decimal places.)

b. The variance of the returns is

().

(Round to five decimal places.)

c. The standard deviation is

()%.

(Enter your response as a percent rounded to two decimal places.)