Multilevel Models Part 1: Do I Need a Multilevel Model?
If you have data where the observations are not independent due to nesting or clustering, you may need a multilevel model. Another scenario that would require a multilevel model is if you have data...
View ArticleMultilevel Models Part 2: What is a Multilevel Model?
Multilevel models (also called hierarchical linear models) are used to analyze clustered or grouped data, as well as longitudinal or repeated measures data. Consider the simple scenario shown below,...
View ArticleWhen is a Multilevel Model not appropriate?
I recently received this interesting question regarding Multilevel Models after one of my last blog posts: Question: Can you tell me when a multilevel-model is not appropriate? I have data that by...
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