Unclassed Choropleth Maps

http://go.owu.edu/~jbkrygie/krygier_html/geog_353/geog_353_lo/geog_353_lo07.html

Unclassed Choropleth maps portray the fact that the number of categories is equal to the number of data values. The use of shading is commonly used in this type of mapping. In this the shading type is all assigned a value instead of classifying the data. In these maps, it shows a classed choropleth map on the left and an unclassed choropleth map on the right. As you can see, there are no intervals like the classed map in the unclassed map, and each value is assigned its own individual symbol or style. They both represent population change in the United States per county.