Fight Finance

(a) Adjusted closing prices add back dividends and reverse the effect of stock splits.

(b) Apple's effective annual total return between the market close on 2 January 2008 and 2 January 2009 was -0.534269 (=(24.22-11.28)/24.22).

(c) Sample variance of the S&P500's effective annual total returns over the 3 year period was 0.084452.

(d) Sample covariance of effective total annual returns between Apple and the S&P500 index over the 3 year period was 0.041131.

(e) Apple's equity beta of annual total returns over the 3 year period was 3.530767.