d1 d2 为虚拟变量 d3=d1*d2
为什么d3的z值和P值缺失??
OPG
ig_vw_is Coef. Std. Err. z P>z [95% Conf. Interval]
ig_vw_is
_cons .0120585 .0039141 3.08 0.002 .0043869 .0197301
ARMA
ar
L1. -1.001114 .0012796 -782.34 0.000 -1.003622 -.998606
ma
L1. 1.199565 .0176341 68.03 0.000 1.165003 1.234127
L2. .1984626 .017636 11.25 0.000 .1638966 .2330286
HET
d1 22.03715 .689339 31.97 0.000 20.68607 23.38823
d2 18.01439 .4709948 38.25 0.000 17.09126 18.93752
d3 -19.71454 . . . . .
_cons -25.49642 .7133935 -35.74 0.000 -26.89465 -24.0982
ARCH
arch
L1. .0928432 .0050772 18.29 0.000 .0828921 .1027943
garch
L1. .8879995 .0054455 163.07 0.000 .8773266 .8986725


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