Galton Bridge
The Galton Bridge is a visual tool created by the British polymath Francis Galton in the late 19th century. It is designed to illustrate the concept of regression toward the mean, showing how traits can be inherited in a population. The bridge consists of a series of pegs arranged in a triangular formation, where balls representing individuals drop through the pegs, demonstrating how their positions reflect their traits.
This bridge serves as a metaphor for understanding statistical principles in genetics and social sciences. It highlights how extreme traits tend to be less extreme in subsequent generations, emphasizing the role of heredity and environmental factors in shaping characteristics.