1. The past five monthly returns for PG&E are 3.27 percent, 4.13 percent, 3.87 percent, 6.62 percent, and 3.68 percent. Compute the standard deviation of PG&Es monthly returns. (Do not round intermediate calculations and round your final answer to 2 decimal places.)

Standard deviation %

2. The past five monthly returns for Kohls are 3.66 percent, 3.92 percent, 1.80 percent, 9.31 percent, and 2.68 percent. Compute the standard deviation of Kohls monthly returns. (Do not round intermediate calculations and round your final answer to 2 decimal places.)

Standard deviation

%

3. Following are three economic states, their likelihoods, and the potential returns:

Economic State		Probability		Return
Fast growth		0.24		33	%
Slow growth		0.52		7
Recession		0.24		40

Determine the standard deviation of the expected return. (Round your answer to 2 decimal places.)

Standard deviation

%