Overdispersion at the Binomial and Multinomial Distribution

Authors

  • Emese Vágó
  • Sándor Kemény
  • Zsolt Láng
https://doi.org/10.3311/pp.ch.2011-1.03

Abstract

Overdispersion is a widely discussed phenomenon in case of binomial and Poisson distributed data. We analysed multinomial data with varying multinomial parameters as a part of attribute gauge study. In this situation overdispersion is expected to occur. However in case of nonrepeated observations it is not present. We investigated and proved the ``lack´´ of overdispersion in case of binomial and multinomial variables if there are no repeated observations. The explanation is a ``compensation effect´´, which only occurs in case of binomial and multinomial variables and does not occur for Poisson distributed data.

Keywords:

Underdispersion, overdispersion, attribute gauge, clinical trial, binomial, multinomial and Poisson distributions

Citation data from Crossref and Scopus

How to Cite

Vágó, E., Kemény, S., Láng, Z. “Overdispersion at the Binomial and Multinomial Distribution”, Periodica Polytechnica Chemical Engineering, 55(1), pp. 17–20, 2011. https://doi.org/10.3311/pp.ch.2011-1.03

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Articles