The statistics book I am reading recommends omega squared to measure the effects of my experiments. I have already proven using a split plot design (mix of within-subjects and between-subjects design) that my within-subjects factors are statistically significant with p<0.001 and F=17.
Now I'm looking to see how big is the difference… is there an implementation of omega squared somewhere for R (or python? I know… one can dream 😉 Searching on the internet for R-related stuff is a pain the *, I don't know how I manage to find stuff with C.
thanks!
Best Answer
A function to compute omega squared is straightforward to write. This function takes the object returned by the aov test, and calculates and returns and omega squared:
edit: updated function for n-way aov models: