Basic introduction to multiple regression using RStudio (Jan 2024)

This video demonstrates multiple linear regression using RStudio using fictional data. I begin by demonstrating how to import data from an SPSS data file into RStudio and then proceed to examine the structure of the data. Next, I perform multiple regression analysis both with and without factor variables. I illustrate how to change the reference level on dummy coded variables and also how to perform a test of the change in R-square to test the omnibus effect of a factor variable on the dependent variable. I also illustrate functions associated with the lm.beta and jtools packages.
The data referenced in the video can be downloaded here:
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A text file containing the code written during the presentation is provided here:
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The R file written during the presentation is linked here:
drive.google.c...