Naming Basics Best practice recommendations are to create a chart placing independent variables on the horizontal, x-axis and dependent variables on the vertical, y-axis.

Type in the interval that you want to use for the X-axis labels. The first axis label displays, then Excel skips labels until the number of your interval, and continues on in this pattern.

If you have uneven distribution of data in your Excel chart, here is a better way to change the automatic axis settings.