黄老师,您好,这是我的代码
- pvarsoc lnifdiflowcf lnofdiflowcf,maxlag(4) pvaropts(instl(1/4))
复制代码复制代码
一下是这个代码得出的结果:
Running panel VAR lag order selection on estimation sample
....
Selection order criteria
Sample: 2008 - 2015 No. of obs = 216
No. of panels = 27
Ave. no. of T = 8.000
+--------------------------------------------------------------------------+
| lag | CD J J pvalue MBIC MAIC MQIC |
|-------+------------------------------------------------------------------|
| 1 | .7856633 95.15777 4.92e-15 30.65443 71.15777 54.79432 |
| 2 | .7393786 51.70778 1.92e-08 8.705554 35.70778 24.79882 |
| 3 | .7599663 41.42775 2.19e-08 19.92663 33.42775 27.97326 |
| 4 | -.5275347 . . . . . |
+--------------------------------------------------------------------------+
.
end of do-file
请问老师:
1、从显示的结果中,可以得出 最优滞后阶数是3的结论吗?
2、请问老师代码中maxlag(4) pvaropts(instl(1/4)),这两个4是怎么确定的呢?若同时改为5,则结果显示为:
Selection order criteria
Sample: 2009 - 2015 No. of obs = 189
No. of panels = 27
Ave. no. of T = 7.000
+--------------------------------------------------------------------------+
| lag | CD J J pvalue MBIC MAIC MQIC |
|-------+------------------------------------------------------------------|
| 1 | .7354365 93.97529 4.61e-13 10.10734 61.97529 40.96234 |
| 2 | .7216147 72.8999 9.15e-11 9.998941 48.8999 33.14019 |
| 3 | .6502878 47.20456 1.40e-07 5.270586 31.20456 20.69809 |
| 4 | .5610732 9.862425 .04281 -11.10456 1.862425 -3.390814 |
| 5 | .1621039 . . . . . |
+--------------------------------------------------------------------------+
显然结果不一样了,请问黄老师 maxlag(4) pvaropts(instl(1/4)) 中的4 改怎样选择呢?
谢谢黄老师