Following you will find the end-of-month prices for both the Standard & Poor's 500 Index and Ford Motor Company common stock.
1. Calculate the average monthly return and the standard deviation of these returns for both the S&P 500 and Ford.
S&P 500 Ford
2003 November 1,055.61 13.20
December 1,108.55 16.00
2004 January 1,131.02 14.54
February 1,142.93 13.75
March 1,123.93 13.57
April 1,118.54 15.36
May 1,120.00 14.85
June 1,134.30 15.65
July 1,099.91 14.72
August 1,102.80 14.11
September 1,111.39 14.05
October 1,125.23 13.03
November 1,180.54 14.18