| 随机效应模型结果 | ||||
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| Variable | Coefficient | Std. Error | t-Statistic | Prob. |
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| 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) |
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| Weighted Statistics |
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| 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 |
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| Unweighted Statistics |
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| R-squared | 0.199044 | Mean dependent var | 45.99749 | |
| Sum squared resid | 32111.11 | Durbin-Watson stat | 0.002714 | |
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固定效应模型结果
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| Variable | Coefficient | Std. Error | t-Statistic | Prob. |
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| 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) |
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| Cross-section fixed (dummy variables) |
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| 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 |
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