Betoecmist 发表于 2021-1-16 21:24
年龄肯定没问题啊,取ln下,试试,有问题进我空间继续探讨
您好!我的数据是非平衡面板数据,对年龄这个变量进行单位根检验后结果是:
xtunitroot fisher aa(代表年龄变量), dfuller lag(0)
(5639 missing values generated)
Fisher-type unit-root test for aa
Based on augmented Dickey-Fuller tests
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Ho: All panels contain unit roots Number of panels = 72
Ha: At least one panel is stationary Avg. number of periods = 40.68
AR parameter: Panel-specific Asymptotics: T -> Infinity
Panel means: Included
Time trend: Not included
Drift term: Not included ADF regressions: 0 lags
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Statistic p-value
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Inverse chi-squared(144) P 0.0000 1.0000
Inverse normal Z . .
Inverse logit t(4) L* . .
Modified inv. chi-squared Pm -8.4853 1.0000
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P statistic requires number of panels to be finite.
Other statistics are suitable for finite or infinite number of panels.
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这个结果显示单位根检验通过了吗?