Jittered dot plots

By default, when you make a graph from a Numerical variable, DataClassroom will display it as a jittered dot plot.

This is because we consider this plot to be the best for getting an immediate feel for how your data is distributed:

You can see that although there is only one variable (HeadWidth) here, on the Y axis, the points are randomly placed in the X direction, allowing you to see them all (or almost all). Without jitter, they would all be in the same place on the X axis, and you'd have trouble getting the feel of your data:

Depending on how many data points you have, and how big you make them (you can adjust the size under the Appearance menu) you might want more or less jitter, so you can control this using the Set the jitter control on the right of the graph:

Too many points?

If you have so many data points that your dot plot really doesn't help you see the distribution, try a Histogram instead. This can give another view of the distribution: