Monday, July 4, 2011

Bivariate Choropleth Map

Bivariate Choropleth Map URL
Bivariate choropleth maps are those that compare two different sets of data in one map.  The two variables on a single map are represented by colors or symbols.  This is a type of choropleth map.  In this example, the color for each couty is the total population of people.  The lighter colors show the smaller populations and the darker colors show the counties that are more populated.  Since bivariate choropleth maps have two different variables, other variable is average house value for the area. 

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