Stock A and Stock B have the following historical trends.

Year	Stock A's Returns	Stock B's Returns
1	-10%	-23%
2	18.50	21.29
3	38.67	44.25
4	14.33	3.67
5	33.00	28.30

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

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

C. Looking at the annual returns data on the two stocks, would you guess that the correlation coefficient between returns on the two stocks is closer to +0.9 or to 0.9?

D. If you added more stocks at random to the portfolio, which of the following statements most accurately describes what would happen to p? (1) p would remain constant. (2) p would decline to somewhere in the vicinity of 15 percent. (3) p would decline to zero if enough stocks were included