选择不同的滞后阶数的结果如下:究竟应该是滞后多少呢?
VAR Lag Order Selection Criteria
Endogenous variables: LNDSCY LNWANGANG
Exogenous variables: C
Date: 08/18/09 Time: 15:37
Sample: 1990 2007
Included observations: 10
Lag LogL LR FPE AIC SC HQ
0 -7.310632 NA 0.022098 1.862126 1.922643 1.795739
1 21.80784 40.76586 0.000151 -3.161569 -2.980018 -3.360730
2 22.83836 1.030517 0.000320 -2.567672 -2.265087 -2.899607
3 39.36276 9.914641* 4.19e-05* -5.072552* -4.648933* -5.537262*
* indicates lag order selected by the criterion
LR: sequential modified LR test statistic (each test at 5% level)
FPE: Final prediction error
AIC: Akaike information criterion
SC: Schwarz information criterion
HQ: Hannan-Quinn information criterion
VAR Lag Order Selection Criteria
Endogenous variables: LNDSCY LNWANGANG
Exogenous variables: C
Date: 08/18/09 Time: 15:38
Sample: 1990 2007
Included observations: 11
Lag LogL LR FPE AIC SC HQ
0 -10.11783 NA 0.031070 2.203243 2.275587 2.157640
1 23.23618 48.51493* 0.000154* -3.133851* -2.916817* -3.270660*
2 24.96642 1.887538 0.000260 -2.721168 -2.359445 -2.949183
* indicates lag order selected by the criterion
LR: sequential modified LR test statistic (each test at 5% level)
FPE: Final prediction error
AIC: Akaike information criterion
SC: Schwarz information criterion
HQ: Hannan-Quinn information criterion
VAR Lag Order Selection Criteria
Endogenous variables: LNDSCY LNWANGANG
Exogenous variables: C
Date: 08/18/09 Time: 15:39
Sample: 1990 2007
Included observations: 13
Lag LogL LR FPE AIC SC HQ
0 -22.67928 NA 0.152845 3.796812 3.883727 3.778947
1 9.399952 49.35266* 0.002067* -0.523070* -0.262324* -0.576665*
* indicates lag order selected by the criterion
LR: sequential modified LR test statistic (each test at 5% level)
FPE: Final prediction error
AIC: Akaike information criterion
SC: Schwarz information criterion
HQ: Hannan-Quinn information criterion
VAR Lag Order Selection Criteria
Endogenous variables: LNDSCY LNWANGANG
Exogenous variables: C
Date: 08/18/09 Time: 15:39
Sample: 1990 2007
Included observations: 9
Lag LogL LR FPE AIC SC HQ
0 -5.377836 NA 0.017696 1.639519 1.683347 1.544939
1 20.01153 33.85249* 0.000161 -3.113674 -2.982191 -3.397414
2 22.39404 2.117779 0.000290 -2.754230 -2.535092 -3.227130
3 40.38707 7.996905 2.78e-05* -5.863794 -5.557000 -6.525854
4 379.5848 0.000000 NA -80.35218* -79.95773* -81.20340*
* indicates lag order selected by the criterion
LR: sequential modified LR test statistic (each test at 5% level)
FPE: Final prediction error
AIC: Akaike information criterion
SC: Schwarz information criterion
HQ: Hannan-Quinn information criterion



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