The Galton board, also known as the Galton box or quincunx or bean machine (or incorrectly Dalton board), is a device invented by Francis Galton to demonstrate the central limit theorem, in particular that with sufficient sample size the binomial distribution approximates a normal distribution. Galton designed it to illustrate his idea of regression to the mean, which he called "reversion to mediocrity" and made part of his eugenist ideology.
The Galton board, also known as the Galton box or quincunx or bean machine (or incorrectly Dalton board), is a device invented by Francis Galton to demonstrate the central limit theorem, in particular that with sufficient sample size the binomial distribution approximates a normal distribution. Galton designed it to illustrate his idea of regression to the mean, which he called "reversion to mediocrity" and made part of his eugenist ideology.
Source: Wikipedia "Galton board" · CC BY-SA 4.0
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