Hi. For evaluating a choice experiment I estimate a conditional logit model with mlogit in R .
The output looks like this:
mlogit(RES ~ Money + X1a + X1b + X2a + X2b | Age,
data = CE, reflevel = "C", shape = "long", alt.var = "ALT", method = "nr",
print.level = 0)
can someone explain how to calculate the marginal effects of a multinomial logit model with alternative-invariant variables (e.g. income) only. A similar question was asked here but not answered sufficiently. The calculation works only, if I also include alternative-variant...