Heteroskedasticity testing through comparison of Wald-type statistics

This paper shows that a test for heteroskedasticity within the context of classical linear regression can be based on the difference between Wald statistics in heteroskedasticity-robust and nonrobust forms. The test is asymptotically distributed under the null hypothesis of homoskedasticity as chi-s...

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Detalhes bibliográficos
Autor principal: Murteira, José (author)
Outros Autores: Ramalho, Esmeralda (author), Ramalho, Joaquim (author)
Formato: article
Idioma:por
Publicado em: 2014
Texto completo:http://hdl.handle.net/10174/9149
País:Portugal
Oai:oai:dspace.uevora.pt:10174/9149