Two columns or rows of data in Microsoft Excel may contain useful information, but you'll just have a set of numbers. You can give spreadsheet viewers a graphical representation of those numbers by ...

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 ...