|
| Minor group | Major group | North Dakota |
| Model type | ARIMA (0, 1, 0) (0, 1, 1)s | ARIMA (2, 1, 0) (1, 0, 0)s | ARIMA (2, 1, 0) (1, 0, 0)s |
| AR (1) | N/A | −0.03 (0.10) | −0.14 (0.10) |
| AR (2) | N/A | 0.19* (0.11) | 0.20* (0.11) |
| SAR (12)/SMA (12) | 0.86*** (0.14) | 0.69*** (0.11) | 0.72*** (0.10) |
| No. of Obs. | 121 | 89 | 97 |
| MAE | 53133 | 313431 | 347598 |
| R2 | 0.959 | 0.996 | 0.996 |
| Ljung-Box χ2 test for error autocorrelation | No at 5% | No at 5% | No at 5% |
| ADF test for trend | No at 1% | No at 1% | No at 1% |
| SDF test for trend | No at 1% | No at 1% | No at 1% |