Monday, June 11, 2012


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Sunday, June 10, 2012

Galton Box

The Galton box, is a device invented by Sir Francis Galton to demonstrate the central limit theorem, in particular that the normal distribution is approximate to the binomial distribution. The machine consists of a vertical board with interleaved rows of pins. Balls are dropped from the top, and bounce left and right as they hit the pins.

Galton Box in Game Maker, source and executable

Galton Box in Turtle Blocks Source

  • At the moment the balls have an equal chance of going left and right. What happens if you change it? Why?
  • Change the number of rows. What happens? Why?
  • What is the relationship between this and a similar experiment in coin tossing Turtle art , Game Maker ?

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