Question:
Using Google Finance, find the monthly rates of return for General Electric (calculate the ending month returns on the the last day of each month from October 31, 2007 to September 30, 2008 for both GE and the S&P500 - i.e. 10/31/07 GE at 28.92 and 09/30/08 at 22.14 to get return for 10/31/07). Compute the beta coefficient.