Map with little difference:
Map shows significant difference:
In the first map, I selected a very broad difference range in the legend, 50000-150000, so that most counties’ median household income fell between this range. As a result, on the map little income difference among counties are shown. People who view the first map on the first glance will think Connecticut as a state with very low income inequality. In the second map, I reduced the difference range and select 70000, 100000 as critical point on my map. As there are many counties whose median household income is less than 70000, and there are many counties with median household income greater than 100000, the map shows a significant income difference among CT counties.