overdispersion love

Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The presence of greater dispersion in a data set than would be expected according to the statistical model in use.

Etymologies

over- +‎ dispersion (Wiktionary)

Examples

  • Moreover, I seem to recall that there might be some overdispersion present, so something like negative binomial marginals might be better.

    Curry on Landsea 1993 « Climate Audit

  • When the slope is less than one (dashed line in the bottom panel) this shows a bias towards lower phylogenetic overdispersion and phylogenetic clustering.

    PLoS ONE Alerts: New Articles

  • When the slope is greater than one (dashed line in the top panel) shows a bias towards higher phylogenetic overdispersion and phylogenetic clustering.

    PLoS ONE Alerts: New Articles

  • Thus negative NRI and NTI values indicate a high level of phylogenetic overdispersion.

    PLoS ONE Alerts: New Articles

  • Distributions of numbers of contacts are discrete distributions and usually display a high degree of overdispersion with some persons having large numbers and many persons having low numbers of contacts.

    PLoS ONE Alerts: New Articles

  • Median IBS and overdispersion factor (lambda) of the quantile-quantile plot for each population pair (a), and values of chi-square test statistic (b) and expected mean IBS (c) for combinations of allele frequencies in two populations.

    PLoS ONE Alerts: New Articles

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