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| نموذج التأثيرات الثابتة للبيانات المقطعية الزمنية (Panel Fixed Effects Model)× | اختبار هاوسمان للبيانات اللوحية× | |
|---|---|---|
| المجال | الاقتصاد القياسي | الاقتصاد القياسي |
| العائلة | Regression model | Regression model |
| سنة النشأة | 1978 | 1978 |
| صاحب الطريقة≠ | Mundlak (1978); classical treatment in Wooldridge (2010) and Baltagi (2021) | Jerry A. Hausman |
| النوع≠ | Panel regression estimator | Specification test |
| المصدر التأسيسي≠ | Wooldridge, J. M. (2010). Econometric Analysis of Cross Section and Panel Data (2nd ed.). MIT Press. ISBN: 978-0262232586 | Hausman, J. A. (1978). Specification tests in econometrics. Econometrica, 46(6), 1251–1271. DOI ↗ |
| الأسماء البديلة | within estimator, FE model, within-group estimator, LSDV model | Hausman endogeneity test, Wu-Hausman test, fixed-vs-random effects test, Hausman chi-squared test |
| ذات صلة | 5 | 5 |
| الملخص≠ | The panel fixed effects (FE) model controls for all time-invariant, unit-specific unobserved heterogeneity by absorbing it into individual intercepts. By sweeping out unit means through the within transformation, FE yields unbiased estimates of the effect of time-varying regressors even when omitted unit-level confounders are correlated with those regressors. | The Hausman specification test for panel data determines whether individual-specific effects are correlated with the regressors — a correlation that would make the random effects estimator inconsistent. A statistically significant result favours the fixed effects model; a non-significant result supports the more efficient random effects model. |
| ScholarGateمجموعة البيانات ↗ |
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