. dfuller d_ln_usgdp
Dickey-Fuller test for unit root Number of obs = 23
---------- Interpolated Dickey-Fuller ---------
Test 1% Critical 5% Critical 10% Critical
Statistic Value Value Value
------------------------------------------------------------------------------
Z(t) -2.992 -3.750 -3.000 -2.630
------------------------------------------------------------------------------
MacKinnon approximate p-value for Z(t) = 0.0356
看p值的话<0.05 应该是拒绝假设,
但是看检验值的话却在5%-10%之间。。。
那到底有没有单位根呢?
求赐教!谢谢!