Interpreting Intercepts

Using Marginal Means to Explain an Interaction to a Non-Statistical Audience

July 10th, 2018 by

Even with a few years of experience, interpreting the coefficients of interactions in a regression table can take some time to figure out. Trying to explain these coefficients  to a group of non-statistically inclined people is a daunting task.

For example, say you are going to speak to a group of dieticians. They are interested (more…)

Answers to the Interpreting Regression Coefficients Quiz

January 16th, 2010 by

Yesterday I gave a little quiz about interpreting regression coefficients.¬† Today I’m giving you the answers.

If you want to try it yourself before you see the answers, go here.¬† (It’s truly little, but if you’re like me, you just cannot resist testing yourself).

True or False?

1. When you add an interaction to a regression model, you can still evaluate the main effects of the terms that make up the interaction, just like in ANOVA. (more…)