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Variantes da solução de Scheffé para o problema de Behrens-Fisher baseadas em reamostragem

Authors: Oliveira, João Luís Nogueira de;

Variantes da solução de Scheffé para o problema de Behrens-Fisher baseadas em reamostragem

Abstract

Num par de artigos de 1943 e 1944, Sche é deduziu para o problema de Behrens-Fisher uma solução simples com distribuição t exacta, que mostrou ter boas propriedades. Todavia, posteriormente preteriu essa solução em favor do teste t aproximado de Welch. Neste trabalho mostramos que a estatística de teste de Welch se pode obter por reamostragem da solução de Sche é. Utilizamos o mesmo processo de reamostragem para obter outras variantes da estatística de Sche é, de que fazemos uma exploração simples por simulação.

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Portugal
Related Organizations
Keywords

Henry Sche é, Resampling, Matemática, Graus de liberdade efectivos, Problema de Behrens-Fisher, Satterhwaite's formula, Homogeneidade de variâncias, Variance homogeneity, ., Médias potência, Welch's approximate t, Efective degrees of freedom, Faculdade de Ciências Exatas e da Engenharia, Behrens-Fisher problem, Power means, Teste t aproximado de Welch, Reamostragem, Fórmula de Satterthwaite

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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