Choropleth Map

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Choropleth maps display areal data. A common way to areally average choropleth map data is to either use percentages, which is shown in this map, or denisty (persons per square mile). As shown in this choropleth map, the yellow states' unemployment rate is less than 7.4%, the green states' rate is 7.4%-9.0%, the blue states' rate is 9.0%-10.9%, and the red states' rate is over 10.9%.