Bivariate Choropleth Maps are choropleth maps that analyze two variables. The information is measured on a scale that allows the variables to be compared. The map above compares the people per square mile in 1990 with the percent change in population from 1990 to 2000 in the South Eastern United States. The different colors represent both of the variables. Looking at the two data sets together allows for conclusions to be made and generalizations to be drawn.
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