2013
DOI: 10.1111/1468-0106.12038
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Nonparametric Generalized Least Squares in Applied Regression Analysis

Abstract: This paper compares a nonparametric generalized least squares (NPGLS) estimator to parametric feasible GLS (FGLS) and variants of heteroscedasticity robust standard error estimators (HRSE) in an applied setting. NPGLS consistently estimates the unknown scedastic function and produces more efficient parameter estimates than HRSE. We apply these various approaches for handling heteroscedasticity to data on professor rankings obtained from RateMyProfessors.com. We find that the statistical significance of key var… Show more

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Cited by 3 publications
(2 citation statements)
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References 40 publications
(65 reference statements)
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“…In contrast, the results indicate that the heteroskedasticity problem exists. It is agreed that when the heteroskedasticity exists, the OLS regression model becomes biased and fails to be the Best Linear Unbiased Estimator (BLUE) and thus the results would be unreliable and misleading (Bentes & Menezes, 2013;Ghasempour & MdYusof, 2014;Gourieroux & Monfort, 1997;Gujarati & Porter, 2009;O'Hara & Parmeter, 2013). When the problem of heteroskedasticity exists, the Generalized Least Squares (GLS) can be used as an alternative regression model (Aljandali & Tatahi, 2018;Boslaugh & Watters, 2008;Gourieroux & Monfort, 1997).…”
Section: Page21 Page21 Page21mentioning
confidence: 99%
See 1 more Smart Citation
“…In contrast, the results indicate that the heteroskedasticity problem exists. It is agreed that when the heteroskedasticity exists, the OLS regression model becomes biased and fails to be the Best Linear Unbiased Estimator (BLUE) and thus the results would be unreliable and misleading (Bentes & Menezes, 2013;Ghasempour & MdYusof, 2014;Gourieroux & Monfort, 1997;Gujarati & Porter, 2009;O'Hara & Parmeter, 2013). When the problem of heteroskedasticity exists, the Generalized Least Squares (GLS) can be used as an alternative regression model (Aljandali & Tatahi, 2018;Boslaugh & Watters, 2008;Gourieroux & Monfort, 1997).…”
Section: Page21 Page21 Page21mentioning
confidence: 99%
“…When the problem of heteroskedasticity exists, the Generalized Least Squares (GLS) can be used as an alternative regression model (Aljandali & Tatahi, 2018;Boslaugh & Watters, 2008;Gourieroux & Monfort, 1997). It is, therefore, capable to provide the BLUE (Gujarati & Porter, 2009;O'Hara & Parmeter, 2013). To evade the inefficiency that occurs by heteroskedasticity, Cameron & Trivedi (2009) and Westerlund & Narayan (2012) recommended applying Feasible Generalized Least Squares model (FGLS).…”
Section: Page21 Page21 Page21mentioning
confidence: 99%