Dot Distribution Map

The map above is a great example of a dot distribution map. A dot distribution map shows the density of a certain circumstance through the usage of dots. This particular map is helpful because it shows what areas in the United States are more populated than others. As you can see, the east coast (especially the northeast) is more populated than the west coast during the year 2000. It also says that each dot represents 7500 people. It is easy to tell where the major cities in each state are located.

http://www.census.gov/geo/www/mapGallery/2kpopden.html