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A comment on CDC tracked millions of phones to see if Americans followed lockdown orders. Parent comment

Re:CDC tracked millions of phones to see if Americans follow... by Mountain_Skies on Tuesday May 03, 2022 @02:27PM (#31251714)
The average census block has a population of 30 people. Millions of census blocks have a population of zero while millions more have a population of only a couple of people. Surely it must be at the census tract level or higher?
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Re:CDC tracked millions of phones to see if Americans follow... by jtsiskin on Tuesday May 03, 2022 @05:38PM (#31253927)
Census block group, not census block
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