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Statistical analysis of datasets comprising several levels of hierarchy (e.g., students nested in classes nested in schools or hierarchical forecasting). For questions about mixed models use [mixed-model] tag. For nested random effects, use [nested-data].

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What does "independent observations" mean?

I'm trying to understand what the assumption of independent observations means. Some definitions are: "Two events are independent if and only if $P(a \cap b) = P(a) * P(b)$." (Statistical Terms D …
RubenGeert's user avatar