There was a log-normal version of the Galton board making the rounds last month: https://stat.ethz.ch/~stahel/lognormal/bioscience.pdf https://stat.ethz.ch/~st

There was a log-normal version of the Galton board making the rounds last month: https://stat.ethz.ch/~stahel/lognormal/bioscience.pdf https://stat.ethz.ch/~stahel/lognormal/bioscience.pdf It really clarified where a log-normal distribution comes from: the consequence of switching a sum of random variables for a product.