Correlated Random Effects - Hausman Test
Pool: DATA_1
Test cross-section and period random effects
Test Summary Chi-Sq. Statistic Chi-Sq. d.f. Prob.
Cross-section random 0.000000 3 1.0000
Period random 0.000000 3 1.0000
Cross-section and period random 0.000000 3 1.0000
* Cross-section test variance is invalid. Hausman statistic set to zero.
* Period test variance is invalid. Hausman statistic set to zero.
** Warning: robust standard errors may not be consistent with
assumptions of Hausman test variance calculation.
Cross-section random effects test comparisons:
Variable Fixed Random Var(Diff.) Prob.
FDISHARE? 1.619666 0.935066 -0.010373 NA
BS? 25.826604 4.730911 79.237536 0.0178
FS? 10.535481 1.064130 4.940580 0.0000
Cross-section random effects test equation:
Dependent Variable: LOG(TFP?)
Method: Panel EGLS (Period random effects)
Date: 03/06/09 Time: 00:22
Sample: 2001 2006
Included observations: 6
Cross-sections included: 14
Total pool (balanced) observations: 84
Swamy and Arora estimator of component variances
White cross-section standard errors & covariance (d.f. corrected)
Variable Coefficient Std. Error t-Statistic Prob.
C -1.916552 0.295072 -6.495194 0.0000
FDISHARE? 1.619666 0.309257 5.237285 0.0000
BS? 25.82660 9.029847 2.860137 0.0056
FS? 10.53548 2.272515 4.636044 0.0000
Effects Specification
S.D. Rho
Cross-section fixed (dummy variables)
Period random 0.026353 0.0993
Idiosyncratic random 0.079366 0.9007
Weighted Statistics
R-squared 0.721038 Mean dependent var 0.413359
Adjusted R-squared 0.654420 S.D. dependent var 0.203553
S.E. of regression 0.119661 Sum squared resid 0.959349
F-statistic 10.82352 Durbin-Watson stat 0.668957
Prob(F-statistic) 0.000000
Unweighted Statistics
R-squared 0.729062 Mean dependent var 0.413359
Sum squared resid 1.538026 Durbin-Watson stat 0.625742
Period random effects test comparisons:
Variable Fixed Random Var(Diff.) Prob.
FDISHARE? 0.502465 0.935066 -0.054144 NA
BS? 1.800018 4.730911 0.226533 0.0000
FS? -0.400805 1.064130 0.336485 0.0116