Gas station without pumps

2011 February 25

statpics: Galton’s Bayesian Machine

Filed under: Uncategorized — gasstationwithoutpumps @ 08:24
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Robert W. Jernigan of statpics has a great picture and explanation today of Galton’s Bayesian Machine.

 

This is a really cool demonstration of Bayesian stats, with prior distribution at the top, the likelihood function in the middle and the posterior distribution at the bottom. (Image touched up from http://3.bp.blogspot.com/-9gbbPOxiY8o/TWcTgktny9I/AAAAAAAAAUE/gcEhiFnBQ1Y/s1600/stigFigure1.jpg)

This machine starts with balls distributed according to a prior distribution at the top, then splits them front and back according to a likelihood function in the middle, then puts them back into uniform size bins to show the posterior distribution.

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