IMHO ordinal values as the most misunderstood ones - their are neither categorical nor numerical (even if they happen to be represented by numbers). Setting uti

IMHO ordinal values as the most misunderstood ones - their are neither categorical nor numerical (even if they happen to be represented by numbers). Setting utility by hand is at best - a questionable way to do it. The educated way is to use Item Response Theory (see e.g. https://github.com/philchalmers/mirt/wiki https://github.com/philchalmers/mirt/wiki).