Quantitative data consist of data that are recorded on a numerical scale. There are three common graphical methods to display data: dot plots, stem-and-leaf plots, and histograms (see next pages for stem-and-leaf and histograms).
Dot plots are one of the simplest statistical plots. They are useful for highlighting clusters and gaps, as well as outliers.
Statistics by Matthew Cheung. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.