On May 6, 2010, the stock market showed crazy turbulence for a few minutes and investigators hypothesize that it was due to a flood of computer-generated trades. First, locate Apple's historical data at finance.yahoo.com. In the search tool, type in AAPL which is Apple's ticker symbol and is traded on NASDAQ. Choose Historical Data and use the Time Period tool to only get data for May 2, 2010, through May 12, 2010. You will need to hit the Apply button then you will be ready to download the data.

Find the data for the same time period for Expedia stock (ticker symbol EXPE, also traded on NASDAQ). Make a separate line graph for the Expedia data.