Table 2.
Descriptive statistics; 1940 Census tracts, Philadelphia (n = 404)
| Mean | SD | Min | Max | |
|---|---|---|---|---|
| Present Day Characteristics | ||||
| Shootings (2013–2014) | 5.317 | 8.678 | 0 | 73 |
| Violent crimes (2013–2014) | 80.517 | 85.849 | 0 | 611 |
| Population (ACS 5-year estimate 2014) | 3777.238 | 2981.639 | 2 | 16013 |
| HOLC Zone (% of land area) | ||||
| Red | 27.817 | 39.396 | 0.000 | 100.000 |
| Yellow | 15.127 | 28.864 | 0.000 | 100.000 |
| Blue | 23.745 | 37.546 | 0.000 | 100.000 |
| Green (reference) | 4.745 | 17.403 | 0.000 | 100.000 |
| No zone | 28.565 | 38.150 | 0.000 | 100.000 |
| 1940 Census Variables | ||||
| White and other race (%) | 90.023 | 19.020 | 0.000 | 100.000 |
| Black (%) | 9.878 | 18.994 | 0.000 | 100.000 |
| Median house value (1940 $US) | 2686 | 2590 | 0 | 16278 |
| Age ≥ 25 years without a high school certificate (%) | 77.835 | 16.685 | 0.000 | 100.000 |
| Tenant occupied dwellings (%) | 57.469 | 19.758 | 0.000 | 100.000 |
| Dwellings without a radio (%) | 5.629 | 11.166 | 0.000 | 100.000 |
| Dwellings without a mechanical refrigerator (%) | 38.515 | 26.809 | 0.000 | 100.000 |
| Dwellings without central heating (%) | 12.887 | 20.380 | 0.000 | 100.000 |
| Dwellings with ≥ 1 person per room (%) | 10.908 | 8.692 | 0.000 | 62.500 |