Youve observed the following returns on SkyNet Data Corporations stock over the past five years: 18 percent, 14 percent, 20 percent, 22 percent, and 10 percent.

a.	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 1 decimal place, e.g., 32.1.)

Average return

%

b-1.	What was the variance of the stocks returns over this period? (Do not round intermediate calculations and round your answer to 5 decimal places, e.g., 32.16161.)

Variance

b-2.	What was the standard deviation of the stocks 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

%