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A graphical tool for assessing the suitability of a count regression model
Wilson, Paul Einbeck, Jochen
Wilson, Paul
Einbeck, Jochen
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2021-01-27
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Abstract
Whilst many numeric methods, such as AIC and deviance, exist for assessing or comparing model fit, diagrammatic methods are few. We present here a diagnostic plot, which we refer to as a ‘Quantile Band plot’, that may be used to visually assess the suitability of a given count data model. In the case of diagnosed model inadequacy, the plot has the unique feature of conveying precise information on the character of the violation, hence pointing the data analyst towards a potentially better model choice.
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Wilson, P. and Einbeck, J. (2021) A graphical tool for assessing the suitability of a count regression model, Austrian Journal of Statistics, 50, pp. 1–23.
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Journal article
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en
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1026-597X