最近做双向固定效应模型,为什么用stata和eviews做出来的系数一样,而T值和R方不一样呢?小弟拜问各位论坛大神。
这个是stata做出来的
R-sq: within = 0.3298 Obs per group: min = 7
between = 0.0025 avg = 7.0
overall = 0.0439 max = 7
F(17,129) = 14.12
corr(u_i, Xb) = -0.2387 Prob > F = 0.0000
(Std. Err. adjusted for 130 clusters in name)
------------------------------------------------------------------------------
| Robust
finance | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
x1 | .1186353 .0396691 2.99 0.003 .040149 .1971216
x2 | .0714742 .0142185 5.03 0.000 .0433425 .0996059
x3 | -.0033022 .000675 -4.89 0.000 -.0046377 -.0019666
x4 | .0000484 .000373 0.13 0.897 -.0006896 .0007864
x5 | .0042851 .000829 5.17 0.000 .0026449 .0059253
x6 | -.0109559 .0066513 -1.65 0.102 -.0241156 .0022038
x7 | -.0187775 .0330257 -0.57 0.571 -.0841196 .0465646
x8 | 4.29e-06 1.34e-06 3.19 0.002 1.63e-06 6.95e-06
x9 | .0002832 .0008769 0.32 0.747 -.0014517 .0020181
x10 | .6640682 .2500073 2.66 0.009 .1694226 1.158714
x11 | -.0054669 .0047646 -1.15 0.253 -.0148937 .0039598
year2 | -.0444232 .0118352 -3.75 0.000 -.0678395 -.0210069
year3 | -.0541246 .038915 -1.39 0.167 -.1311189 .0228698
year4 | -.0638809 .0475466 -1.34 0.181 -.1579529 .0301912
year5 | -.0501324 .049275 -1.02 0.311 -.1476243 .0473594
year6 | -.0437519 .0558497 -0.78 0.435 -.1542518 .066748
year7 | -.0582018 .0611158 -0.95 0.343 -.179121 .0627174
_cons | -.0838227 .0691798 -1.21 0.228 -.2206966 .0530512
-------------+----------------------------------------------------------------
sigma_u | .23202807
sigma_e | .12763355
rho | .76770369 (fraction of variance due to u_i)
------------------------------------------------------------------------------
这个是eviews做出来的
Variable Coefficient Std. Error t-Statistic Prob.
C -0.128754 0.066076 -1.948561 0.0517
x1 0.118635 0.022037 5.383385 0.0000
x2 0.071474 0.004540 15.74433 0.0000
x3 -0.003302 0.003544 -0.931735 0.3518
x4 4.84E-05 0.000921 0.052563 0.9581
x5 0.004285 0.001224 3.501145 0.0005
x6 -0.010956 0.013660 -0.802064 0.4228
x7 -0.018777 0.019159 -0.980112 0.3273
x8 4.29E-06 1.12E-06 3.836780 0.0001
x9 0.000283 0.000885 0.320156 0.7489
x10 0.664069 0.221690 2.995477 0.0028
x11 -0.005467 0.005420 -1.008667 0.3135
Effects Specification
Cross-section fixed (dummy variables)
Period fixed (dummy variables)
R-squared 0.796071 Mean dependent var 0.290201
Adjusted R-squared 0.757049 S.D. dependent var 0.258944
S.E. of regression 0.127634 Akaike info criterion -1.132417
Sum squared resid 12.42951 Schwarz criterion -0.354860
Log likelihood 662.2496 Hannan-Quinn criter. -0.835542
F-statistic 20.40062 Durbin-Watson stat 1.521827
Prob(F-statistic) 0.000000


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