. hausman fe re,constant
---- Coefficients ----
| (b) (B) (b-B) sqrt(diag(V_b-V_B))
| fe re Difference S.E.
-------------+----------------------------------------------------------------
ln排污费用元 | .1157432 .1145426 .0012006 .0034901
ln资产负债率 | .1792212 .1449142 .034307 .0234461
ln总资产元 | .5177495 .5489974 -.0312479 .0209776
ln营业利润 | .0495466 .0325094 .0170372 .0157436
企业年龄 | -.0503832 -.0340368 -.0163464 .0101788
_cons | 4.322657 3.658237 .6644208 .4064189
------------------------------------------------------------------------------
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(6) = (b-B)'[(V_b-V_B)^(-1)](b-B)
= 3.01
Prob>chi2 = 0.8076
请问这怎么看是不是拒绝原假设?应该选择固定效应模型还是随机效应模型?谢谢大佬解答!