Stocks A and B have the following historical returns:

a. Calculate the average rate of return for each stock during the period 2001 through 2005.

b. Assume that someone held a portfolio consisting of 50 percent of Stock A and 50 percent of Stock B. What would the realized rate of return on the portfolio have been in each year? What would the average return on the portfolio have been during this period? 

c. Calculate the standard deviation of returns for each stock and for the portfolio. 

d. Calculate the coefficient of variation for each stock and for the portfolio. 

e. Assuming you are a risk-averse investor, would you prefer to hold Stock A, Stock B, or the portfolio? Why?

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Year Stock A's Returns, ra Stock B's Returns, rg 2001 (18.00%) (14.50%) 2002 2003 33.00 21.80 15.00 (0.50) 30.50 (7.60) 2004 2005 27.00 26.30