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 ...

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 ...

Identify when and why a scatterplot is useful. Interpret a scatter plot making note of the direction (positive or negative), form (linear or non-linear) and strength of the relationship, as well as ...