如题,那该怎么办?xtreg q_w rd daw dard_w sizew LEV_w noa_w OWCw opit big4 law,re
Random-effects GLS regression Number of obs = 462
Group variable: stkcd Number of groups = 77
R-sq: within = 0.0148 Obs per group: min = 6
between = 0.0953 avg = 6.0
overall = 0.0255 max = 6
Random effects u_i ~ Gaussian Wald chi2(10) = 11.78
corr(u_i, X) = 0 (assumed) Prob > chi2 = 0.2998
q_w Coef. Std. Err. z P>z [95% Conf. Interval]
rd .2202992 .0944257 2.33 0.020 .0352284 .4053701
daw .033567 .3013219 0.11 0.911 -.557013 .624147
dard_w -.772831 .8099325 -0.95 0.340 -2.36027 .8146076
sizew -.2171283 .1100583 -1.97 0.049 -.4328386 -.0014179
LEV_w .3411446 .2308972 1.48 0.140 -.1114057 .7936949
noa_w -.0190282 .0618672 -0.31 0.758 -.1402857 .1022294
OWCw .1346509 .2557491 0.53 0.599 -.3666081 .6359099
opit .1543585 .1623585 0.95 0.342 -.1638582 .4725753
big4 -.005888 .1433605 -0.04 0.967 -.2868693 .2750934
law .0199071 .0845489 0.24 0.814 -.1458056 .1856199
_cons 1.771189 1.016181 1.74 0.081 -.2204887 3.762867
sigma_u 0
sigma_e .79233625
rho 0 (fraction of variance due to u_i)
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. xtreg q_w rd daw dard_w sizew LEV_w noa_w OWCw opit big4 law,fe
Fixed-effects (within) regression Number of obs = 462
Group variable: stkcd Number of groups = 77
R-sq: within = 0.0257 Obs per group: min = 6
between = 0.0333 avg = 6.0
overall = 0.0017 max = 6
F(10,375) = 0.99
corr(u_i, Xb) = -0.4497 Prob > F = 0.4521
q_w Coef. Std. Err. t P>t [95% Conf. Interval]
rd .2984541 .1215843 2.45 0.015 .0593818 .5375265
daw .0077917 .3322839 0.02 0.981 -.6455816 .661165
dard_w -.7272707 .9448549 -0.77 0.442 -2.585148 1.130607
sizew .315956 .2995565 1.05 0.292 -.2730651 .904977
LEV_w .0821663 .5064903 0.16 0.871 -.9137507 1.078083
noa_w -.0604707 .0673179 -0.90 0.370 -.1928385 .0718971
OWCw -.1775042 .739871 -0.24 0.811 -1.63232 1.277312
opit .2433911 .218924 1.11 0.267 -.1870813 .6738636
big4 -.1093302 .3565293 -0.31 0.759 -.8103774 .5917169
law -.096961 .1046254 -0.93 0.355 -.3026869 .108765
_cons -3.016854 2.811427 -1.07 0.284 -8.54499 2.511283
sigma_u .34292079
sigma_e .79233625
rho .15776231 (fraction of variance due to u_i)
F test that all u_i=0: F(76, 375) = 0.76 Prob > F = 0.9291
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求大神路过帮我看一下!!


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