Youve observed the following returns on Crash-n-Burn Computers stock over the past five years: 15 percent, 6 percent, 18 percent, 14 percent, and 10 percent.

a.	What was the arithmetic average return on Crash-n-Burns stock over this five-year period? (Round your answer to 1 decimal place. (e.g., 32.1)

Average return _______%

b-1	What was the variance of Crash-n-Burns returns over this period? (Round your answer to 5 decimal places. (e.g., 32.16161))

Variance ________

b-2	What was the standard deviation of Crash-n-Burns returns over this period? (Do not round intermediate calculations and round your final answer to 2 decimal places. (e.g., 32.16))

Standard deviation __________%