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Tag: Regression

Visualizing a Continuous by Continuous Interaction in Linear Regression

Visualizing a Continuous by Continuous Interaction in Linear Regression

View high res version here. “Did you see if there was a difference by [insert the person’s favorite population or topic of interest].” With a resigned response I reply “No I haven’t, but that is a good idea.” I’ve had this exchange in every research talk I’ve given. Often times we are interested in understanding how one group varies by another when predicting an outcome. This can be examined via an interaction term in a regression model. An interaction term…

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Using a Forest Plot to Display Regression Results

Using a Forest Plot to Display Regression Results

View high res version here. How many times have you sat through a presentation and stared blankly at a table of regression results? If you have been to my presentations, it has been many, many times. I was thinking about a better and more intuitive way to present regression results that also gives a sense of uncertainty. In this post, I show how to visualize OLS regression results via a forest plot. The nice thing about forest plots is that they…

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