Play & watch · probability

🎱 Galton Board

Drop balls through a triangle of pegs. Each peg sends a ball left or right at random — yet thousands of them pile up into the same smooth bell curve every time.

Balls 0

Drop balls and watch the bins fill. The dashed line is the theoretical bell curve (binomial). More rows = smoother curve; Bias skews it left or right. Chaos on each ball, order in the crowd.