Table 5: Results of Intervention Analyses for the Five Series
Table 5: Results of Intervention Analyses for the Five Series
| Time series | # obs. after 8/2001 | AO (Sept.) | TC (Oct.) | LS (Nov.) | Rs-squared |
|---|---|---|---|---|---|
| Late arrivals | 6 | 14.28 | -3.11 | -5.52 | 0.404 |
| (0.0000) | (0.3334) | (0.0431) | |||
| 14 | 13.91 | -4.64 | -4.94 | 0.402 | |
| (0.0000) | (0.1264) | (0.0648) | |||
| Cancellations | 6 | 18.12 | -0.06 | -1.56 | 0.947 |
| (0.0000) | (0.8978) | (0.0001) | |||
| 14 | 18.00 | 0.72 | -1.80 | 0.947 | |
| (0.0000) | (0.2450) | (0.0009) | |||
| Enplanements | 4 | -17.42 | -11.99 | -2.25 | 0.813 |
| (0.0000) | (0.0000) | (0.0082) | |||
| 10 | -17.31 | -11.18 | -2.75 | 0.798 | |
| (0.0000) | (0.0000) | (0.0017) | |||
| Air revenue passenger-miles | 4 | -13.94 | -10.02 | -1.60 | 0.800 |
| (0.0000) | (0.0000) | (0.0245) | |||
| 10 | -13.82 | -9.33 | -2.08 | 0.787 | |
| (0.0000) | (0.0000) | (0.0036) | |||
| Rail revenue passenger-miles | 4 | -9.97 | -0.18 | 3.38 | 0.564 |
| (0.0002) | (0.9460) | (0.1335) | |||
| 11 | -9.71 | 1.71 | 1.46 | 0.554 | |
| (0.0002) | (0.4480) | (0.3801) |
Note: The first two rows for each series provide the estimated coefficients and their p-values based on the first analysis; the next two rows provide the same information for the second analysis.