我完全不知道怎么做单位根检验~

看了论坛里的一些帖子~

就用stata自己胡乱搞了一下~

xtfisher lnim, trend lag(1)


Fisher Test for panel unit root using an augmented Dickey-Fuller test (1 lags)

Ho: unit root

         chi2(28)     =   97.1744
         Prob > chi2  =      0.0000

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xtfisher lntim, trend lag(1)


Fisher Test for panel unit root using an augmented Dickey-Fuller test (1 lags)

Ho: unit root

         chi2(28)     =   25.9208
         Prob > chi2  =      0.5774

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. xtfisher  lntim, lag(2) pp

Fisher Test for panel unit root using Phillips-Perron test (2 lags)

Ho: unit root

         chi2(28)     =   98.4493
         Prob > chi2  =      0.0000
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. xtfisher lngdp, trend lag(1)


Fisher Test for panel unit root using an augmented Dickey-Fuller test (1 lags)

Ho: unit root

         chi2(28)     = 1035.9877
         Prob > chi2  =      0.0000

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. xtfisher   lnexc, trend lag(1)


Fisher Test for panel unit root using an augmented Dickey-Fuller test (1 lags)

Ho: unit root

         chi2(28)     =    0.0000
         Prob > chi2  =      1.0000



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xtfisher   lnexc, lag(2) pp


Fisher Test for panel unit root using Phillips-Perron test (2 lags)

Ho: unit root

         chi2(28)     =    0.2992
         Prob > chi2  =      1.0000

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我是分别向做lntim和lnim与lnexc的关系~这种情况。。。我看不懂结果啊！
只知道关于exc的很烂~~然后求指导！