You may create your spreadsheet/database from scratch or download an existing one from the Web. As far as quantity is concerned, you should create at least 300 cells of numerical data, but preferably more than this. For example, if you are starting a spreadsheet from scratch, it should have at least 300 numerical or calculated values in it, preferably more. And if you are downloading a pre-existing spreadsheet, the amount of new data that you compute should be at least 300 cells. But quality and organization are more important than quantity. The extra functions that you add should reveal some relationships or trends among the data, hopefully to the point that a pivot table and charts would be useful.
When downloading data from the Web, you may notice that some data you want is organized into an HTML table rather than a spreadsheet. Rather than retyping these numbers into Excel, there is a way for Excel to interpret the HTML table directly, as you saw in one of our early labs in Excel. It’s called the Web Query, and you can access it by going to Excel’s Data menu and choosing Get External Data ??From Web.