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How do I combine county 1 (C1), county 2 (C2)and county 3 (c3) to get the overall race/ethnicity proportions for the region?

  • C1 is 47.6% white, 45.9% Black or African American, 3.5% Asian, 2.5% multiracial, and 4.1% Hispanic or Latino.
  • C2 is 68.2%white, 24.9% African American or Black, 4.5% Asian, 2.2% multiracial, and 3% Hispanic or Latino.
  • C3 is 89.9% white, 5.1% Black or African American, 2.7% Asian, 2% multiracial, and 3.4% Hispanic or Latino .

The overall population of C1 is 302,838. The overall population of C2 is 996,945 the overall population of C3 is 399,182.

So, eyeballing it, there is disproportionate victimization by race/ethnicity, in this region, see below. But I need the math part. E.g., in these 3 counties combined, xx are white, xx black, xx Asian, etc.

The region with 3 counties combined reported 26.3% (n=15) of survivors were white/Caucasian, 59.6% (n=34) were Black/African American, 3.5% (n=2) were Hispanic/Latinx, 1 was Asian American, 1 was another race, and 7% (n=4) were Multiracial.

Matti P.
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user698852
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    The data suffices to compute the exact number (well, rounded number) of people of each type in each country. Work from there. – lulu Aug 27 '19 at 12:32
  • So, I can convert % to n, combine n s for each category, and convert back to % of the overall population (3 counties population combined)? – user698852 Aug 27 '19 at 12:47
  • Sure. If you can back out to the original numbers, you can do whatever computation you want. – lulu Aug 27 '19 at 12:50

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