| Statistics for Census Data by Decade and Region |
| Output Dataset From PROC UNIVARIATE |
| Obs | Region | Decade | PopulationMean | PopulationStdDeviation | PopulationTotal | Pop_50 | Pop_75 | Pop_100 |
| 1 | Northeast | 1980 | 5.45978 | 5.92525 | 49.138 | 3.1080 | 7.365 | 17.558 |
| 2 | Northeast | 1990 | 5.64556 | 6.00833 | 50.810 | 3.2880 | 7.730 | 17.990 |
| 3 | South | 1980 | 4.43329 | 3.32034 | 75.366 | 3.8940 | 5.347 | 14.225 |
| 4 | South | 1990 | 5.02647 | 4.20752 | 85.450 | 4.0410 | 6.187 | 16.987 |
| 5 | Midwest | 1980 | 4.90567 | 3.75037 | 58.868 | 4.3910 | 7.376 | 11.428 |
| 6 | Midwest | 1990 | 4.97242 | 3.75702 | 59.669 | 4.6335 | 7.420 | 11.431 |
| 7 | West | 1980 | 3.32154 | 6.21703 | 43.180 | 1.3030 | 2.717 | 23.667 |
| 8 | West | 1990 | 4.06000 | 7.83953 | 52.780 | 1.5150 | 3.294 | 29.760 |