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| Metric | R squared | r | a.x | b |
| per capita income | 0.0074 | 0.086 | -2E-05x | 4.45 |
| % white non hispanic | 0.0112 | 0.106 | 0.008x | 4.5 |
| % unemployed | 0.0067 | 0.082 | 0.086x | 3.57 |
| % poverty | 0.0095 | 0.097 | 0.26x | 3.54 |
| % finish college | 0.0049 | 0.070 | -0.65x | 5.9 |
| % black | 0.0099 | 0.099 | 0.0104x | 3.82 |
| % unemployed | 0.0067 | 0.082 | 0.086x | 3.57 |
| population per sq mile | 0.0042 | 0.065 | 6E-05x | 3.9 |
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Also see:
Delta variant cases by country: https://www.statista.com/statistics/1245971/number-delta-variant-worldwide-by-country/
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