There are quite a few methods to convert rankings into numbers, such as Elo scores or item response theory. Different such methods generally yield extremely similar results, and are often based probabilities. For instance, in Chess, if two players’ ability differ by 400 Elo points, then the odds of the better player winning are 10:1.
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[LDSL#6] When is quantification needed, and…
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There are quite a few methods to convert rankings into numbers, such as Elo scores or item response theory. Different such methods generally yield extremely similar results, and are often based probabilities. For instance, in Chess, if two players’ ability differ by 400 Elo points, then the odds of the better player winning are 10:1.