noun. With regard to categorical data examination, a scenario wherein the observations show more ranging than is expected by the sampling model.

OVERDISPERSION: "The over-dispersion would require the team of research professionals to scrap all the information they'd documented thus far and start from square one with their proposed trial."
Cite this page: N., Pam M.S., "OVERDISPERSION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/overdispersion/ (accessed August 3, 2020).