Table 6: Relative Values (RV) of MAPE Using Different Forecast Origins

Table 6: Relative Values (RV) of MAPE Using Different Forecast Origins

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Series Last observation Forecast origin
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.