Identificação de outliers por alocação das observações através do modelo Poisson aplicado ao número de casos de Aids diagnosticados no Brasil

Abstract

The robust analysis variance method proposed by Bertaccini and Varriale (2006) allows the monitoring of the outliers effect in the statistic modeling process. As for that, the formation of subsets is used, where the sample units are allocated, based only on data inspection. With the purpose of extending this method to the Poisson model, this work intends to monitor the effect of outliers in the number of AIDS cases diagnosed in Brazil, from 2003 to 2006. The methodology proposed was viable and is recommended for counting data, being, therefore, an important data analysis technique used to identify outliers in samples. It can also be applied to other generalized models with appropriate changes in obtaining residuals.