cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
The Discovery Summit 2025 Call for Content is open! Submit an abstract today to present at our premier analytics conference.
Choose Language Hide Translation Bar
View Original Published Thread

Question About F-Tests in GLMMs with Binomial Errors

LanaMilana
Level I
Hi,
I have a question regarding Generalized Linear Mixed Models (GLMMs) in JMP pro. Most statisticians consider it inappropriate to use F-tests or t-tests to evaluate predictor contributions in GLMs or GLMMs with binomial errors. This is because F- and t-tests are based on sums of squares, which assume normally distributed residual errors.
While using a logit link function helps linearize the relationship between predictors and a binomial response variable, it does not normalize the residuals. Binomial mixed-effects models are typically optimized by minimizing the negative log-likelihood rather than the sums of squares, making likelihood ratio tests generally more appropriate than F-tests.
Given this, why does JMP allow the calculation of F-tests for GLMMs with a binomial distribution? Does JMP provide an option to perform likelihood ratio tests instead of F-tests in such models? Additionally, how can be verified the reliability of outputs that report F-tests?
I appreciate your insights on this matter.
Best regards,
Barbara
0 REPLIES 0