随机效应模型结果

Variable

Coefficient

Std. Error

t-Statistic

Prob.  

C

39.33848

2.048080

19.20749

0.0000

RAILDMD?

-128.6272

27.75405

-4.634539

0.0000

RKMD?

0.015721

0.003777

4.162320

0.0001

RKMD?^2

-2.09E-06

6.46E-07

-3.241216

0.0015

RAILDMD?*RKMDLOW?

186.4388

41.87258

4.452527

0.0000

RAILDMD?*RKMDMID?

246.4897

41.47251

5.943447

0.0000

Y10?

0.611274

0.171687

3.560394

0.0005

Y11?

1.869566

0.194564

9.608993

0.0000

Y12?

1.697030

0.235178

7.215934

0.0000

Random Effects (Cross)

Weighted Statistics

R-squared

0.596551

    Mean dependent var

1.616036

Adjusted R-squared

0.574444

    S.D. dependent var

1.402253

S.E. of regression

0.914754

    Sum squared resid

122.1692

F-statistic

26.98498

    Durbin-Watson stat

0.713433

Prob(F-statistic)

0.000000

Unweighted Statistics

R-squared

0.199044

    Mean dependent var

45.99749

Sum squared resid

32111.11

    Durbin-Watson stat

0.002714

Variable

Coefficient

Std. Error

t-Statistic

Prob.  

C

53.37039

2.004775

26.62164

0.0000

RAILDMD?

-46.42311

30.65097

-1.514572

0.1326

RKMD?

-0.024007

0.005706

-4.207358

0.0001

RKMD?^2

2.20E-06

7.86E-07

2.805688

0.0059

RAILDMD?*RKMDLOW?

70.96628

46.09965

1.539410

0.1264

RAILDMD?*RKMDMID?

133.6071

46.07277

2.899914

0.0045

Y10?

0.911087

0.175806

5.182360

0.0000

Y11?

2.324370

0.203085

11.44530

0.0000

Y12?

2.342008

0.250159

9.362072

0.0000

Fixed Effects (Cross)

Cross-section fixed  (dummy variables)

R-squared

0.998597

    Mean dependent var

45.99749

Adjusted R-squared

0.998137

    S.D. dependent var

16.13477

S.E. of regression

0.696423

    Akaike info criterion

2.327671

Sum squared resid

56.26053

    Schwarz criterion

3.093436

Log likelihood

-141.3945

    Hannan-Quinn criter.

2.638708

F-statistic

2172.237

    Durbin-Watson stat

1.073600

Prob(F-statistic)

0.000000