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dc.contributor.authorÇavuş, Mustafa
dc.contributor.authorYazıcı, Berna
dc.contributor.authorSezer, Ahmet
dc.date.accessioned2019-10-20T09:31:17Z
dc.date.available2019-10-20T09:31:17Z
dc.date.issued2017
dc.identifier.issn1303-5010
dc.identifier.urihttps://dx.doi.org/10.15672/HJMS.2017.417
dc.identifier.urihttps://hdl.handle.net/11421/17654
dc.descriptionWOS: 000405571000012en_US
dc.description.abstractThere are several approximate tests proposed such as Welch's F-test (W), the Parametric Bootstrap Test (PB) and Generalized F-test (GF) for comparing several group means under heteroskedasticity. These tests are powerful and have nominal type 1 error rates but they are not performing satisfactorily under non-normality caused by outlier(s). To handle this problem, we investigate tests that are powerful and provide nominal type 1 error rates by using robust estimators both for location and scale parameters. The performance of the modified tests are examined with Monte-Carlo simulation studies. Results of simulations clearly indicate that Generalized F-test modified with Huber's M-estimators achieves the nominal type 1 error rate and provide higher power than alternative methods.en_US
dc.language.isoengen_US
dc.publisherHacettepe University, Fac Scien_US
dc.relation.isversionof10.15672/HJMS.2017.417en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectOutlieren_US
dc.subjectHeteroskedasticityen_US
dc.subjectUnbalanceden_US
dc.subjectHuber'S M-Estimatorsen_US
dc.subjectGeneralized F-Testen_US
dc.titleModified tests for comparison of group means under heteroskedasticity and non-normality caused by outlier(s)en_US
dc.typearticleen_US
dc.relation.journalHacettepe Journal of Mathematics and Statisticsen_US
dc.contributor.departmentAnadolu Üniversitesi, Fen Fakültesi, İstatistik Bölümüen_US
dc.identifier.volume46en_US
dc.identifier.issue3en_US
dc.identifier.startpage493en_US
dc.identifier.endpage510en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.institutionauthorYazıcı, Berna


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