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Clustered data structures are pretty common in research, and MLMs are one way to handle them. But as a beginner it can be difficult to know where to start, and not everyone has access to formal classes or intensive courses. (2/6)
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These materials walk through the basics of MLMs: why/whether you need one, fixed and random effects, specifying models, estimation options, effect sizes, troubleshooting errors. We start from linear regression and take you to running your own MLMs. (3/6)
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There are examples with built-in code and output in every chapter. You can download code, data files, and worksheets to follow along at home, or just to use as a jumping off point for your own analyses. (4/6)
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