standardized choropleth map

http://www.directionsmag.com/articles/choropleth-mapping-with-exploratory-data-analysis/123579

In order to account for different sized land masses, the standardized map used aerially averaged data instead of the total value. this allows every sized unit to be compared to each other. An example of this can be seen in the above map of the population density. This is a better mapping technique of all choropleth maps because it allows for the comparison of different unit sizes. This map shows the population of different sized areas and shades them according to the quantile it falls into. Each area can now be compared to each other.