I am new to stats and this is a silly question, but I just cannot see how ANOVA is related to general linear models.

I am learning about GLM and all the materials I found are saying that ANOVA is a kind of general linear model. for example: https://onlinecourses.science.psu.edu/stat504/node/216

I can see how GLM is extended from multiple linear regression, but ANOVA is just the ratio: "variance between" over "variance within". How is it GLM?

  • $\begingroup$ You use the term general linear models in the title and the question, but the link you sent discusses about the generalized linear models (and you used this tag). In the link, they distinguished these terms to clarify the terminology. I think you are asking about generalized linear models, right? $\endgroup$ – T.E.G. - Reinstate Monica Nov 5 '16 at 4:13
  • $\begingroup$ I think you will find the information you need in the linked thread. Please read it. If it isn't what you want / you still have a question afterwards, come back here & edit your question to state what you learned & what you still need to know. Then we can provide the information you need without just duplicating material elsewhere that already didn't help you. $\endgroup$ – gung - Reinstate Monica Nov 10 '16 at 16:50