I would like to compare the results of my CBC-HB (part worth utilities) with a linear model. Thus I am wondering if there is a useful way to code my categoric variable (attribute with 7 levels e.g. red, blue, purple ...) with linear coding?
Also it's interesting to know how to code e.g. ordinal scale variables (no, minimum, medium, maximum) linear? Is it simple 1,2,3,4?
Thanks a lot for your help.