Friday, April 17, 2009

choropleth map


Choropleth maps use color to show variations in data. This map shows the number of males per 100 females in each state in the United States. It is interesting to see that in the eastern and central states there are always less males than females, but in the western states there are about equal amounts of each or in some cases such as Nevada and Alaska there are actually more males than females.

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