Today is April 30, 2012, and you have just started your new job with a financial planning

Question:

Today is April 30, 2012, and you have just started your new job with a financial planning firm. In addition to studying for all your license exams, you have been asked to review a portion of a client's stock to determine the risk/rectum profiles of 12 in the Unfortunately, your small firm cannot afford the expensive databases that would provide all this information with a few simple keystrokes, but that's why they hired you. Specifically, you have been asked to determine the monthly average returns and standard deviations for the 12 for the past five years. In the following chapters, you will be asked to do more extensive analyses on these same The (with their symbols in parentheses) are:
Archer Daniels Midland (ADM)
Boeing (BA)
Caterpillar (CAT)
Deere & Co. (DE)
General Mills, Inc. (GIS)
Google Inc (GOOG)
Hershey (HSY)
International Business Machines (IBM)
JPMorgan Chase & Co. (JPM)
Microsoft (MSFT)
Procter and Gamble (PG)
Wal-Mart (WMT)
Convert these prices to monthly returns as the percentage change in the monthly prices. Note that to compute a return for each month, you need a beginning and ending price, so you will not be able to compute the return for the first month.
Stocks
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