I'm currently coding studies for my meta-analysis and I was wondering how I should code the interaction between a categorical variable (1 = private, 2 = public, 3 = misc [both]) and a continuous variable (individualism score from 1-100)
I coded them out of necessity with e.g. 1_91 (private x individualism score of 91 for the United States), but for the analyses I need a different way to code it.
The interaction serves in the end as a moderator and I want to use r Studio for further analyses.
Thank you so much!