This video looks at how to model and interpret interactions between variables in R. Interactions are simply situations where the effect of a predictor variable on some outcome "depends" on the effect of a third variable. We will do this for multiple numeric predictors and categorical predictors.
Links to video sections and data files are in the description below.
Data files used in this video:
diet.csv: https://www.mediafire.com/file_premium/l0twfsoxwcms5t3/diet.csv/file
partypeople.csv: https://www.mediafire.com/file_premium/1yry91w3gecej7o/partypeople.csv/file
Sections:
00:00 Intro and loading prerequisites
01:42 Interaction between a numeric predictor and a categorical predictor
19:28 Interaction between two categorical predictors
28:34 Interaction between two numeric predictors
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