Classed Choropleth Map

http://courses.washington.edu/info424/MainPages/INFO424Schedule.htm

Above is a Classed Choropleth Map, this is a type of thematic map in which areas are shaded or patterned in proportion to the measurement of the statistical variable being displayed.  This map above represents a one year forecast change in jobs throughout the United States.  Where green shading corresponds to a better forcasted change in job growth. By using color coordination and a legend this makes for a easily read and understandable map.