Standardized choropleth maps

http://upload.wikimedia.org/wikipedia/commons/thumb/7/78/USA_states_population_density_map.PNG/800px-USA_states_population_density_map.PNG

A map has to be standardized in order to have information to compare it too. A Standardized Choropleth map standardizes information, such as population per square mile, in order to have comparisons of the distributed data. This map is standardized because it calculates the population per square miles in order to be able to compare the distribution of the data.