Nested Models and GLMs

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Intro to nested models and intraclass variation 1:30
How to code nested models in R 8:06
Examples of nested structures 10:30
Intro to GLMs 13:30
Assumptions to GLMs 19:20

Examples in R:
Nested example with snow pack 22:27
Penguin example of binomial glm model 31:28
Tick example of poisson glm mixed model 39:21
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Am I right in thinking that the site is nested within county because only certain counties contain certain sites - hence this is why it is a nested design. By comparison, if all of the counties contained all of the same sites, then this would be a fully crossed design? In that case, you would use: lmer(sqrt(Feb_2) ~ Year + scale(elevation) + (1|County) + (1|site) ... ) correct?

willpkay