Variable

ADF test statistic

Prob.

结论

Jan

(c,t,0)-2.2536

0.4549

非平稳

(c,0,0)-2.3689

0.1532

(0,0,0)-0.6656

0.4264

May

(c,t,0)-2.0265

0.5796

非平稳

(c,0,0)-2.2330

0.1961

(0,0,0)-0.7602

0.3846

Sept

(c,t,0)-1.7982

0.6984

非平稳

(c,0,0)-2.0338

0.2722

(0,0,0)-0.8200

0.3583

D(Jan)

(0,0,0)-10.3313

0.0000

平稳

D(May)

(0,0,0)-9.3458

0.0000

平稳

D(Sept)

(0,0,1)-7.1349

0.0000

平稳