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2018 | 19 | nr 3 | 433--452
Tytuł artykułu

Dealing with Heteroskedasticity within the Modeling of the Quality of Life of Older People

Warianty tytułu
Języki publikacji
Using the estimation method of ordinary least squares leads to unreliable results in the case of heteroskedastic linear regression model. Other estimation methods are described, including weighted least squares, division of the sample and heteroskedasticity-consistent covariance matrix estimators, all of which can give estimators with better properties than ordinary least squares. The methods are presented giving the example of modelling quality of life of older people, based on a data set from the first wave of the COURAGE - Poland study. The comparison of estimators and their practical application may teach how to choose methodologically the most appropriate estimation tool after detection of heteroscedasticity. (original abstract)
Opis fizyczny
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