Table 6 Relative Values (RV) of MAPE Using Different Forecast Origins,,,,
,,Forecast origin,,
Series,Last observation,Dec-01,Mar-02,Jun-02
Late arrivals,Oct-02,1.06,1.14,1.03
Cancellations,Oct-02,7.21,6.65,21.80
Enplanements,Dec-02,1.51,0.74,1.26
Air revenue passenger-miles,Dec-02,1.85,0.76,1.13
Rail revenue passenger-miles,Nov-02,1.11,0.97,1.00
Note: RV values greater than one indicate that the interventions provided greater forecast accuracy.,,,,

,,,,