Thursday, April 10, 2014

Standardized Choropleth Map

http://www.agcensus.usda.gov/Publications/2002/Other_Analysis/

In a standardized map such as the one above, the numerical values are areally averaged by density or percentages. This standardized choropleth map is showing the population of principal farm operators ages 65 years and over in counties and how they are relative as a percent to the total number of principal farmer operators ages 65 years and over. The pattern shown on this map would change drastically if the numerical values were not averaged.

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