Calculating a priori sample size and post-hoc power for linear multiple regression (G*Power)

This video goes over an example of how to calculate the sample size required for multiple linear regresion as well as how to calculate the power that exists in a model post-hoc. I spend a bit of time explaining the different parameters.

[@a7medmoe]

great explanation! I am currently looking at how to do a priori for a medation effect. If you have any ideas on how to go about it, please do share it will be highly appreciated!

[@PsychEDD]

I found this paper which may be useful: www.ncbi.nlm.nih.gov/pmc/articles/PMC2843527/

[@d.k.2594]

do you have any references for it?