How to Graph a Demand Schedule It can be useful to graph a demand and supply schedules for a visual representation of the market for a particular product.

To fix an Excel spreadsheet not adding up correctly, check the SUM function's syntax and make sure there aren't any text format cells in the sheet.

Growth rates are the percent change of a variable over time. It can be applied to GDP, corporate revenue, or an investment portfolio. Here’s how to calculate growth rates.