用Eviews得到结果如下:
VAR Lag Order Selection Criteria
Endogenous variables: LNa LNb
Exogenous variables: C
Date: 02/01/13 Time: 23:05
Sample: 1 1881
Included observations: 1173
Lag LogL LR FPE AIC SC HQ
0 3974.931 NA 3.92e-06 -6.773966 -6.765326 -6.770708
1 7709.150 7449.337 6.78e-09 -13.13410 -13.10818 -13.12433
2 7766.927 115.0613 6.18e-09 -13.22579 -13.18259 -13.20950
3 7784.571 35.07675 6.04e-09 -13.24906 -13.18858* -13.22625
4 7794.701 20.10528 5.98e-09 -13.25951 -13.18175 -13.23018
5 7805.413 21.22278* 5.91e-09 -13.27095 -13.17591 -13.23511*
6 7809.577 8.235978 5.91e-09* -13.27123* -13.15891 -13.22887
7 7811.442 3.682463 5.93e-09 -13.26759 -13.13799 -13.21872
8 7815.864 8.714968 5.93e-09 -13.26831 -13.12143 -13.21292
* 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
这咋选啊!!!!


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