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	Robust Random Effects Model	मजबूत पैनल डेटा विश्लेषण
क्षेत्र	अर्थमिति	अर्थमिति
परिवार	Regression model	Regression model
उद्भव वर्ष	1980s–2000s	1987
प्रवर्तक	Wooldridge; White (sandwich covariance); Arellano	Arellano (1987); White (1980) heteroscedasticity-consistent framework
प्रकार	Panel GLS estimator with robust inference	Robust estimation / inference correction
मौलिक स्रोत	Wooldridge, J. M. (2010). Econometric Analysis of Cross Section and Panel Data (2nd ed.). MIT Press. ISBN: 978-0262232586	Arellano, M. (1987). Computing robust standard errors for within-groups estimators. Oxford Bulletin of Economics and Statistics, 49(4), 431–434.
उपनाम	robust RE model, sandwich random effects estimator, cluster-robust random effects, GLS-robust RE	robust panel regression, cluster-robust panel estimation, panel regression with robust standard errors, HC/CR panel estimator
संबंधित	5	6
सारांश	The Robust Random Effects model estimates panel data relationships using the GLS random effects estimator while replacing the conventional standard errors with sandwich (heteroscedasticity- and cluster-robust) variance estimates. This protects inference against arbitrary within-group correlation and heteroscedasticity without discarding the efficiency gains of random effects when unit-specific effects are genuinely uncorrelated with the regressors.	Robust panel data analysis applies standard panel estimators — fixed effects, random effects, or pooled OLS — while replacing conventional standard errors with cluster-robust or heteroscedasticity-consistent (HC) variants. The point estimates remain unchanged; what changes is the variance-covariance matrix used for inference, making t-tests and F-tests valid even when errors are heteroscedastic or correlated within cross-sectional units over time.