Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Charlene Rhinehart is a CPA , CFE, chair of ...

A date-and-cost line chart tracks a commodity's changing price over time. Economists use such diagrams to display broad market trends and predict future prices. Businesses that restock continually use ...

Microsoft Excel can be a powerful tool for large and small businesses alike. It is used to perform calculations, store and compile data, and create graphs based on that data. A variety of formulas are ...