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 ...

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 ...

In this tutorial, we will explain how to make a Step Chart in Microsoft Excel. Charts are known to many as a graphical representation of data that people can use to explain a point to their audiences.