I found this map to be an interesting map because it combines color with population. The scale according to the site is a two-color array that combines that total population of whites and asians in the state of Virginia. The color array is differentiated into a darker red for more of the Asian population.. with a darker blue for more of a white population. It is interesting that there is not much mix except for Northern Virginia in the counties of Loudoun, Fairfax, and Prince William Counties.. which is close to downtown DC. It is also interesting to note that there appears to be very few counties outside Northern Virginia with a large Asian population.
The use of the two-color array is a good example of how to show a bivariate map. It is easy to understand and for the map's audience to see what is presented.
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