Most states are doing their best to play "catch up" after DT admin's resistance and incompetence in the first seven, absolutely most crucial, weeks. (Some states not so much.)
Below -- Tests per 100,000 for the states for which data could be found.
Looking at these numbers, I think it would be obvious to a fourth grader that the data is utterly inadequate. Just show them a nice visual. Like a picture of the Rose Bowl at capacity with 600 people in the crowd highlighted. And that's the "best" state.
Of course, in addition to the problem of so few tests, counties won't be comparable because testing rates and criteria haven't been uniform due to utter lack of coordination across local public health authorities.
Number of tests per 100,000
The top 5 states in testing are:
Washington 600
New York 500
Massachusetts 280
Louisiana 240
Minnesota 230
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States data could be found for. States not reporting number of tests presumably have also tested fewer than 20 per 10,000
Tennessee 200
Wisconsin 180
New Jersey 170
Connecticut 160
California 160
Colorado 140
Ohio 120
Illinois 110
Florida 110
Iowa 100
Pennsylvania 100
North Carolina 100
Michigan 90
Mississippi 90
Virginia 70
Georgia 60
Indiana 50
Texas 50
Arizona 12