请教各位大侠,
在用Gregory-Hansen test做结构突变协整检验时,应该以ADF* test、Zt* test、Za* test的结果为准,是选意一个拒绝零假设就行,还是三个必须同时拒绝或无法拒绝零假设才成立。
比如:
Gregory-Hansen Test for Cointegration with Regime Shifts
Model: Change in Regime and Trend Number of obs = 20
Lags = 2 chosen by Bayesian criterion Maximum Lags = 2
Test Breakpoint Date Asymptotic Critical Values
Statistic 1% 5% 10%
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ADF -6.09 7 2006 -6.02 -5.50 -5.24
Zt -4.00 7 2006 -6.02 -5.50 -5.24
Za -18.05 7 2006 -69.37 -58.58 -53.31
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应该以看哪个?