Choropleth Map

http://www.cdc.gov/pcd/issues/2007/oct/07_0091.htm

Choropleth maps show statistical data using shades or color or patterns. Most data is usually in the form of percentages like percentages of a population or percentages of race in a given area. This map features 7 intervals, which represents percentages of individuals living in poverty. Lower percentages are indicated with shades of purple and larger percentages are indicated with shades of red and orange. According to the map, the majority of individuals living in poverty are spread throughout Texas, New Mexico, and Utah.