How to Generate Random Numbers: Poisson Distribution

James Mott

Introduction

Generate random numbers with a Poisson distribution with some JavaScript.

Create a new JavaScript variable with the following Expression, where you replace 5 with your desired mean:

var mean = 5;

var L = Math.exp(-mean);
var p = 1.0;
var k = 0;

do {
    k++;
    p *= Math.random();
} while (p > L);

k - 1;

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