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Overdispersion and cluster models
1995Abstract As we have seen in previous chapters of this part, count data arise from the enumeration of events on individual units. If no explanatory variables, or time, distinguish among the events, they may be aggregated as counts. In fact, this can only be done legitimately for Poisson or binomial data if the events are independent.
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Overdispersed Molecular Evolution in Constant Environments
Journal of Theoretical Biology, 1993According to recent data analysis of DNA sequences, the dispersion index, defined as the variance-to-mean ratio of the number of base substitutions in a lineage, is often much larger than unity, which is in conflict with simple Poisson processes assumed in the molecular clock hypothesis.
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Overdispersion in poisson regression
2008Investigation of a possible relationship between air quality and human health in the community of Prince George, British Columbia was undertaken after a public opinion poll in 1972 discovered that poor air quality was the number one concern of the residents of Prince George.
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Overdispersion of aggregated genetic data
Mutation Research/Environmental Mutagenesis and Related Subjects, 1992K O, Bowman, M A, Kastenbaum
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Overdispersion in modelling accidents on road sections and in Empirical Bayes estimation
Accident Analysis and Prevention, 2001Ezra Hauer
exaly