Personalities doesn't cluster so k-means would not give anything interesting. Big 5 is pretty close to a factor analysis on a questionnaire data set though, so

Personalities doesn't cluster so k-means would not give anything interesting. Big 5 is pretty close to a factor analysis on a questionnaire data set though, so that's a reasonable though. Four colours is not based on anything like that though. I'd say that astrology is better than DISC in that it's obviously bunk, the problem with the colours is that while some people claim to enjoy it as a pastime or conversation starter, some seem to take it further and base actual decisions on it. People reading horoscopes in a magazine wouldn't typically actually follow the advice therein.