Flexible Galton Board

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Each time a red ball hits a green nail, it can bounce left or right with a certain probability. This Demonstration shows how balls accumulate in the bins at the bottom, approximating a binomial distribution.

Contributed by: Michael Schreiber (March 2011)
Open content licensed under CC BY-NC-SA


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The Galton board, also known as a quincunx or bean machine, is a device for statistical experiments named after English scientist Sir Francis Galton.



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