在对面板数据ln人均GDP使用stata进行单位根检验时,怎么检验都是平稳的,但是看时序图怎么看都不是平稳的,真的好奇怪啊,有人知道是为什么吗?
Im-Pesaran-Shin unit-root test for lngdp
----------------------------------------
Ho: All panels contain unit roots Number of panels = 75
Ha: Some panels are stationary Number of periods = 12
AR parameter: Panel-specific Asymptotics: T,N -> Infinity
Panel means: Included sequentially
Time trend: Included Cross-sectional means removed
ADF regressions: No lags included
------------------------------------------------------------------------------
Fixed-N exact critical values
Statistic p-value 1% 5% 10%
------------------------------------------------------------------------------
t-bar -3.9391 -2.390 -2.320 -2.290
t-tilde-bar -1.6928
Z-t-tilde-bar -4.5880 0.0000
------------------------------------------------------------------------------


雷达卡




京公网安备 11010802022788号







