ApolloChoiceModelling forum

yes, that's correct

Hi

there could be many reasons for this. Either there really is no effect (in which case that is a finding), or you don't have enough data, or a bad design. But this is a general question, not Apollo related

Stephane

Hi

you can either impute them, or estimate a separate effect for those people

Stephane

Hi

your unconditional distributions will not be different for people with different socio-demographics unless you have included the interactions in apollo_randCoeff. So subsetting the data will not do anything

Stephane

Hi the delta method in Apollo is for individual model parameters, not for distributed coefficients. In your case, you would need to use apollo_unconditionals to obtain the draws for the coefficients and calculate WTP moments that way, but you would not be able to use apollo_deltaMethod as you cannot...

Hi

it's not clear what you mean exactly. Do you want to interact this with covariates?

Stephane

Hi

you can make predictions from a model in Apollo. This will produce a prediction for each row in the data, and then you can of course use standard R functions to product plots

Stephane

Julia

this should only be needed in situations where you have uncertainty about the attributes

Stephane

Hi

if you share your code and data with me outside the forum, I'll have a look

Stephane

hi

the closest we have to this would be http://apollochoicemodelling.com/files/ ... e_coding.r where you could easily add availabilities too

Stephane