A dotplot is a graph that you can use to assess the distribution of continuous data. A dotplot plots each observation as a dot along a number line (x-axis). Values are divided into equally spaced intervals, called bins. Values that occur in the same bin are stacked. When there is not enough room to show a dot for each observation, Minitab represents multiple observations by a single dot, indicated by a footnote on the graph. Dotplots are especially useful for assessing distributions when there is a relatively small amount of data
The following graphs show the number of orders filled at fast food restaurants over a lunch hour on a single day.