A graphical tool for assessing the suitability of a count regression model
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.Citation
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.Journal
Austrian Journal of StatisticsAdditional Links
https://www.ajs.or.at/index.php/ajsType
Journal articleLanguage
enISSN
1026-597Xae974a485f413a2113503eed53cd6c53
10.17713/ajs.v50i1.921
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