请问面板数据中如何看单位根检验和协整检验呢?
我算出的ADF检验结果:
Null Hypothesis: Unit root (individual unit root process)
Series: GDP_CS, GDP_KS, GDP_SQ, GDP_TC, GDP_WJ, GDP_ZJG
Date: 04/28/14 Time: 11:56
Sample: 2005 2012
Exogenous variables: Individual effects
Automatic selection of maximum lags
Automatic lag length selection based on SIC: 0
Total (balanced) observations: 30
Cross-sections included: 6
Method Statistic Prob.**
ADF - Fisher Chi-square 25.0786 0.0145
ADF - Choi Z-stat -2.50237 0.0062
** Probabilities for Fisher tests are computed using an asymptotic Chi
-square distribution. All other tests assume asymptotic normality.
Intermediate ADF test results D(UNTITLED,2)
Series Prob. Lag Max Lag Obs
D(GDP_CS,2) 0.1976 0 0 5
D(GDP_KS,2) 0.0490 0 0 5
D(GDP_SQ,2) 0.0117 0 0 5
D(GDP_TC,2) 0.4781 0 0 5
D(GDP_WJ,2) 0.2760 0 0 5
D(GDP_ZJG,2) 0.2391 0 0 5
这个结果要怎么解读呢?求好心人帮忙啊,论文里要用到的,可是之前从未学过计量经济学,勉强会用Eviews软件了,可是不会解读结果。。。。
请问P值是看ADF - Fisher Chi-square的 ,还是ADF - Choi Z-stat 的?
老师让研究苏州物流业与GDP的影响,我只能把横截面按照苏州行政区划来划分,所以只有6个。。。。
两个同时都要看,可能同时满足;可能同时不满足,可能只有一个满足。