La máquina de Galton, o caja de galton, es un dispositivo inventado por Francis Galton1​ para demostrar el teorema del límite central, en particular que la distribución binomial es una aproximación a la distribución normal.

La máquina consta de un tablero vertical con varias filas de clavos. Las bolillas caen desde la parte superior, botando aleatoriamente y van depositándose, a medida que caen, en los casilleros de la parte inferior. Formando una superficie de campana. [WIKI]

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The Random Walker: second model of two Galton Boards designed and produced by IFA.com- this version is made to demonstrate probability in investment returns of a global stock market portfolio relating to risk capacity. Slow motion reveals the erratic path of each steel ball (second half of video). The red graph shows the distribution of 592 monthly returns (mean =1%, SD=5%) representing data from 50 years of an IFA Index fund- here the random “walk” of 3000 steel balls falling through 12 levels of branching paths always produce a close match, and both distributions tend toward the famous bell curve distribution. A wonderfully designed modern version of the Galton Box invented by Sir Francis Galton(1894) to demonstrate the Central Limit Theorem – showing how random processes gather around the mean. ➡️ Follow the link in my profile for more info and where to buy a Galton Board like this one and other amazing items featured here on @physicsfun #statistics #math #mathtoy #physicstoy #physics #random #galtonbox #SirFracisGalton #hexstat #probability #pascalstriangle #binomial #binomialdistribution #gaussian #centrallimittheorem #quincunx #turbulence #TRW #therandomwalker #randomwalk #iphoneslomo #240fps #slomo #science #scienceisawesome #mathstoys

A post shared by physicsfun (@physicsfun) on Mar 10, 2019 at 7:42am PDT