Choose a company with publicly traded stock that has experienced considerable price fluctuations in the past few years. You may wish to consider companies such as IBM, JPMorgan Chase, AT&T, Amazon.com, United Healthcare, and Apple. Information about stock prices can be found on many websites, including finance.yahoo.

com. For example, on the Yahoo! site, you can search for data on a company and then click on Historical Prices to download prices for the past three years.