A graphical diagnostic test for two-way contingency tables

Jorge Iván Vélez, Fernando Marmolejo-Ramos, Juan Carlos Correa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We propose and illustrate a new graphical method to perform diagnostic analyses in two-way contingency tables. In this method, one observation is added or removed from each cell at a time, whilst the other cells are held constant, and the change in a test statistic of interest is graphically represented. The method provides a very simple way of determining how robust our model is (and hence our conclusions) to small changes introduced to the data. We illustrate via four examples, three of them from real-world applications, how this method works.

Translated title of the contributionUn prueba gráfica de diagnóstico para tablas de contingencia de doble entrada
Original languageEnglish
Pages (from-to)97-108
Number of pages12
JournalRevista Colombiana de Estadistica
Issue number1
Publication statusPublished - Jan 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016, Universidad Nacional de Colombia. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Statistics and Probability


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