Correlation Matrix in R

This tutorial demonstrates how to create a correlation matrix in R. In addition, I show how to write (i.e., export) and APA style table containing a correlation matrix with confidence intervals and asterisks for statistical significance.
Other videos from my "R Tutorials" playlist can be found here: • R Tutorials
The data file(s) referenced in this R tutorial (and other R tutorials on this playlist) can be downloaded as a compressed (zipped) folder by visiting the following link: github.com/dav.... Click "Clone or Download" followed by "Download ZIP".