Properly formatted charts and graphs can help you grasp the patterns and trends hidden within the raw data of an Excel spreadsheet. For example, if you are comparing the stock performance of two ...

Plotting the frequency of data falling within numeric ranges illustrates the diversity of your data. As an example, a teacher might wish to calculate and display her students' grades by tabulating the ...

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 ...