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| Εκτιμητής Πρώτης Διαφοράς× | Μοντέλο Σταθερών Επιπτώσεων Δεδομένων Πάνελ× | |
|---|---|---|
| Πεδίο | Οικονομετρία | Οικονομετρία |
| Οικογένεια | Regression model | Regression model |
| Έτος προέλευσης≠ | 2010 | 2014 |
| Δημιουργός≠ | Jeffrey Wooldridge (treatment) | Hsiao (textbook treatment); within transformation of panel data |
| Τύπος≠ | Panel data estimator | Panel data regression |
| Θεμελιώδης πηγή≠ | Wooldridge, J. M. (2010). Econometric Analysis of Cross Section and Panel Data (2nd ed.). MIT Press. ISBN: 978-0-262-23258-8 | Hsiao, C. (2014). Analysis of Panel Data (3rd ed.). Cambridge University Press. DOI ↗ |
| Εναλλακτικές ονομασίες | FD Estimator, First-Difference Panel Estimator, First-Difference OLS, Birinci Fark Tahmincisi | fixed effects model, within estimator, panel fixed-effects regression, Panel Veri — Sabit Etkiler Modeli |
| Συναφείς≠ | 2 | 5 |
| Σύνοψη≠ | The First-Difference (FD) estimator is a panel data method that eliminates unobserved, time-invariant individual heterogeneity by subtracting each unit's observation in period t-1 from its observation in period t. By operating on changes rather than levels, FD removes any fixed individual effect that would otherwise confound causal inference. It is widely used in labor economics, program evaluation, and applied microeconomics whenever researchers suspect persistent unobserved differences across individuals, firms, or countries. | The Panel Data Fixed Effects model estimates relationships from panel data (the same units observed over several time periods) while controlling for unit- and/or time-specific effects, supporting causal inference. It is developed as the within estimator in standard treatments such as Hsiao's Analysis of Panel Data (2014). |
| ScholarGateΣύνολο δεδομένων ↗ |
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