Reference #138: Peopleware

For measures of variation in performance, the following rules of thumbs apply over a sample of individuals:

• The best people outperform the worst by 10:1.
• The best people outperform the median by 2.5:1.
• The better-than-median half outperform the other half by more than 2:1.

DeMarco, Lister. Peopleware, 2013. (44)

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