If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

Excel spreadsheets can often contain large amounts of data ranging across broad categories. For example, a sales spreadsheet might record sales of products across multiple departments, or within ...

Save time on status decks with a reusable Excel timeline chart. Data lives in a table, so new milestones update the timeline ...

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 ...

There are 17 different types of charts in Excel, so it can sometimes be difficult to choose which one to use. In this article, we'll look at 10 of the most useful for your everyday data, and how to ...