http://www.gamerdna.com/quizzes/bartle-test-of-gamer-psychologyAs far as the numbers, it could be Fox math or perhaps just the strength of each category.
The result of the Bartle Test is the "Bartle Quotient", which is calculated based on the answers to a series of 30 random questions in the test, and totals 200% across all categories, with no single category exceeding 100%.<7> For example, a person may score "100% Killer, 50% Socializer, 40% Achiever, 10% Explorer," which indicates a player who prefers fighting other players relative to any other area of interest. Scores are typically abbreviated by the first letter of each category, in order of the quotient. In the previous example, this result would be described as a "KSAE" result.
http://en.wikipedia.org/wiki/Bartle_Test