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spotlight analysis

Your Questions Answered from the Interpreting Regression Coefficients Webinar

by Karen Grace-Martin  Leave a Comment

Last week I had the pleasure of teaching a webinar on Interpreting Regression Coefficients. We walked through the output of a somewhat tricky regression model—it included two dummy-coded categorical variables, a covariate, and a few interactions.

As always seems to happen, our audience asked an amazing number of great questions. (Seriously, I’ve had multiple guest instructors compliment me on our audience and their thoughtful questions.)

We had so many that although I spent about 40 minutes answering [Read more…] about Your Questions Answered from the Interpreting Regression Coefficients Webinar

Tagged With: dummy coding, dummy variable, effect size, eta-square, Interpreting Interactions, interpreting regression coefficients, Reference Group, spotlight analysis, statistical significance

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  • Interpreting (Even Tricky) Regression Coefficients – A Quiz

Spotlight Analysis for Interpreting Interactions

by Karen Grace-Martin  Leave a Comment

Not too long ago, a client asked for help with using Spotlight Analysis to interpret an interaction in a regression model.

Spotlight Analysis? I had never heard of it.

As it turns out, it’s a (snazzy) new name for an old way of interpreting an interaction between a continuous and a categorical grouping variable in a regression model. [Read more…] about Spotlight Analysis for Interpreting Interactions

Tagged With: Covariate, Estimated marginal Means, interaction, Regression, spotlight analysis

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  • Confusing Statistical Terms #1: The Many Names of Independent Variables

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