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Filtering by: Committee Member Ramsey, Fred Rights Statement Copyright Not Evaluated Subject Linear models (Statistics)

Diagnostic tools for overdispersion in generalized linear models

Creator:

Ganio-Gibbons, Lisa M.

Abstract:

Data in the form of counts or proportions often exhibit more variability than that predicted by a Poisson or binomial distribution. Many different models have been proposed to account for extra-Poisson or extra-binomial variation. A simple model includes a single heterogeneity factor (dispersion parameter) in the variance. Other models that...

Resource Type:

Dissertation
F-tests in partially balanced and unbalanced mixed linear models

Creator:

Utlaut, Theresa L.

Abstract:

This dissertation considers two approaches for testing hypotheses in unbalanced mixed linear models. The first approach is to construct a design with some type of structure or "partial" balance, so that some of the optimal properties of a completely balanced design hold. It is shown that for a particular type...

Resource Type:

Dissertation