Use the map to answer the question. This map indicates income patterns vary across the United States in contrast to the national average.

Answer the following items.

In one sentence, identify a U. S. state where income is very likely to be significantly above the national average.
In one sentence, identify a U. S. state where income is very likely to be significantly under the national average.
In 2–3 sentences, analyze and suggest reasons why these disparities might exist.
Propose a possible research question about how spatial associations could be used to affect policy in the location you identified in Part B.