Hi Sawtooth Software Team!
I am trying to design partial profile CBC with null level prohibitions and have been faced with a problem. My conjoint includes 23 attributes, each of them has null level. I am going to use partial profile design with 4 attributes shown in each concept and I want to be shown from 2 to 4 non-null levels in each concept.
My question is what numbers for minimum and maximum null levels per concept should I define in "Null level prohibitions" tab?
Many thanks in advance!