This tutorial demonstrates how to run a one-way analysis of variance (ANOVA) in R. Here, a one-way ANOVA is applied in the HR context of training evaluation -- and specifically evaluation of a three-group/condition post-test-only.
Other videos from my "R Tutorials" playlist can be found here: https://www.youtube.com/playlist?list=PLKkRkURCtPjCJOZHskCoyJCPb8wMDs2CW
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: https://github.com/davidcaughlin/R-Tutorial-Data-Files.git. Click "Clone or Download" followed by "Download ZIP".