I am trying to estimate the sample size (power = 80; alpha = 0.05) required for a multinomial logistic regression.
The IV (x) is a dummy variable (0,1). The DV (y) is a nominal variable with 4 categories (0,1,2,3).
The hypothesis is that when x = 0, there would be an equal chance of observing any of the categories in y (i.e., .25 chance per category). And when x = 1, there will be a .60 chance of observing the specific category (0) in y.
The wp tutorial seems to speak only to binomial logistic regressions. Any guidance on how to determine a sample size will be much appreciated.