# Tag Info

Accepted

### Why is there little difference in glm fit using poisson and gaussian family for Poisson data?

You’ve got models to two different data sets. For the Poisson regression, your true conditional expected values (lambda values) are given by $\exp(0.43x+0.2)$. For the linear regression, your true ...
• 63.7k

### GLMs and their conditional expectation and variance

You have to keep in mind that $Y_i,$ the responses, follow exponential family of distributions. Then we can get our required formula working with the log-likelihood of $\theta, ~\ell(\theta)$ and its ...
• 8,922
Accepted

• 93.4k
1 vote

### Reference Request: Generalized Linear Models

My all time favourite book that introduces GLMs is Fahrmeier: https://link.springer.com/book/10.1007/978-3-642-34333-9 It starts off with the basics of linear models, but the section on GLMs should be ...
1 vote

### Why do I get a negative chi-squared value in my type III ANOVA output for my binomial GLM?

Is this as a result of my use of a penalized maximum likelihood (method = brglmFit). Yes. This needs a bit of theory. {brglm2::brglmFit} uses a bias reduction method to fit generalized linear models. ...
• 10.2k
1 vote

### Estimate a GLM where the intercept is known

If you want a logistic regressino with a pre-specified intercept, you can remove the intercept from the model and replace it by a known offset ...
• 39.7k

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