Consider the two (excess return) index-model regression results for stocks A and B. The risk-free rate over the period was 6%, and the markets average return was 15%. Performance is measured using an index model regression on excess returns.

	Stock A	Stock B
Index model regression estimates	1% + 1.2(rM rf)	2% + 0.8(rM rf)
R-square	0.594	0.445
Residual standard deviation, (e)	10.6%	19.4%
Standard deviation of excess returns	21.9%	25.5%

a. Calculate the following statistics for each stock: (Round your answers to 4 decimal places.)

b. Which stock is the best choice under the following circumstances?