Hello this is a question on my FIN 3060 Homework and I am having trouble answering it. If you could please answer it and provide an explanation it would be greatly appreciated. Thank you

Youve observed the following returns on Barnett Corporations stock over the past five years: 29.4 percent, 16.6 percent, 36.2 percent, 3.8 percent, and 22.8 percent.

What was the arithmetic average return on the stock over this five-year period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

Arithmetic average return: ?

What was the variance of the returns over this period? (Do not round intermediate calculations and round your answer to 6 decimal places, e.g., 32.161616.)

Variance: ?

What was the standard deviation of the returns over this period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

Standard deviation: ?