Bivariate Choropleth Map

Bivariate Choropleth Map- Displays two variables on a single map, and their geographical pattern, by combining two different sets of graphic symbols or color. In this way, a relationship can be more easily seen than a comparison between two univariate maps. This bivarate choropleth measures unemployment percentages and number of foreclosures as of October 2011 per state. From this map, it can be inferred that a positive correlation exists between unemployment rate and the number of foreclosures (http://mapyoda.wordpress.com/).