. hausman fe re
---- Coefficients ----
| (b) (B) (b-B) sqrt(diag(V_b-V_B))
| fe re Difference S.E.
-------------+----------------------------------------------------------------
lrgdp | .7985214 3.074316 -2.275794 .7973507
lrwage | .0000291 -.0000339 .000063 .0000243
popdens | -.0006608 .000363 -.0010238 .0007386
edu | -6.50e-07 -5.90e-07 -5.96e-08 .
infra | 1.568577 1.116988 .451589 .2788821
WTO | .1688014 -.0231306 .1919321 .0606453
------------------------------------------------------------------------------
b = consistent under Ho and Ha; obtained from xtreg
B = inconsistent under Ha, efficient under Ho; obtained from xtreg
Test: Ho: difference in coefficients not systematic
chi2(3) = (b-B)'[(V_b-V_B)^(-1)](b-B)
= 7.67
Prob>chi2 = 0.0535
Hausman test 的检验结果如上所示;
可以拒绝H0原假设吗?如果拒绝原假设,就是应该选择FE吗。。。