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Goodness-of-fit tests in parametric regression based on the estimation of the error distribution

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Abstract

Consider a heteroscedastic regression model Y=m(X)+σ(X)ε, where m(X)=E(Y|X) and σ 2(X)=Var (Y|X) are unknown, and the error ε is independent of the covariate X. We propose a new type of test statistic for testing whether the regression curve m(⋅) belongs to some parametric family of regression functions. The proposed test statistic measures the distance between the empirical distribution function of the parametric and of the nonparametric residuals. The asymptotic theory of the proposed test is developed, and the proposed testing procedure is illustrated by means of a small simulation study and the analysis of a data set.

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Correspondence to Wenceslao González Manteiga.

Additional information

I.V.K. is financially supported by the IAP research network nr. P5/24 of the Belgian government (Belgian Science Policy). W.G.M. and C.S.S. are financially supported by the Spanish Ministry of Science and Technology (with additional European FEDER support) through project MTM2005-00820 and from Xunta de Galicia through project PGIDIT03PXIC20702PN.

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Van Keilegom, I., González Manteiga, W. & Sánchez Sellero, C. Goodness-of-fit tests in parametric regression based on the estimation of the error distribution. TEST 17, 401–415 (2008). https://doi.org/10.1007/s11749-007-0044-z

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  • DOI: https://doi.org/10.1007/s11749-007-0044-z

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