Choropleth Map
The word choropleth derives from the Greek words for "area/region" and "multiply." A choropleth map is a thematic map which uses coloring or shading pattern techniques to display the measurement of some sort of statistical data over a region. Often times, it is political data being displayed because this is an easy way to readily see the changes in statistical data over an area. The map below is an example of a choropleth map showing the results of the 2004 U.S. presidential election.
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