Below are the stock returns for the past five years for Agnew Industries:

Year	Stock Return
1	22%
2	33
3	1
4	-12
5	10

What was the stock's coefficient of variation during this five-year period? (Use the population standard deviation to calculate the coefficient of variation.)

An analyst has estimated how a particular stock's return will vary depending on what will happen to the economy:

State of	Probability of	Stock's Expected Return
the Economy	State Occurring	if this State Occurs
Recession	0.10	-60%
Below Average	0.20	-10
Average	0.40	15
Above Average	0.20	40
Boom	0.10	90

What is the coefficient of variation on the company's stock? (Use the population standard deviation to calculate the coefficient of variation.)

Stock X, Stock Y, and the market have had the following returns over the past four years.

Year	Market	X	Y
1	11%	10%	12%
2	7	4	-3
3	17	12	21
4	-3	-2	-5

The risk-free rate is 7 percent. The market risk premium is 5 percent. What is the required rate of return for a portfolio which consists of $14,000 invested in Stock X and $6,000 invested in Stock Y?