Youve observed the following returns on Crash-n-Burn Computers stock over the past five years: 2 percent, -12 percent, 27 percent, 16 percent, and 15 percent.

Requirement 1:

What was the arithmetic average return on Crash-n-Burns stock over this five year period?

(Click to select)7.78%9.60%12.00%10.46%11.42%

Requirement 2:
(a)	What was the variance of Crash-n-Burns returns over this period? (Do not round intermediate calculations.)
	(Click to select)0.022430.017940.023150.020410.01817

(b)	What was the standard deviation of Crash-n-Burns returns over this period? (Do not round intermediate calculations.)
	(Click to select)12.13%15.22%14.98%13.40%17.82%