Seeing Theory is a visual introduction to probability and statistics built around interactive explanations. Its chapters move from basic chance through distributions, frequentist and Bayesian inference, and regression, with controls that expose how the result changes.
Work through the chapters
Start with basic probability if the notation is unfamiliar, or jump directly to a topic from the chapter menu. Each section combines a short explanation with an interactive diagram rather than treating the graphic as decoration.
Use the controls deliberately
Change one parameter at a time and predict what will happen before moving it. That small pause makes the relationship between an assumption, a sample and the visual result easier to retain.
Archived but still useful
Brown University labels the site as archived for reference. The material remains accessible, but it should be treated as a stable learning resource rather than an actively maintained statistics package.
Things to know
- The site is archived and no longer actively developed.
- Interactive intuition does not replace practice with calculations.
- Some layouts and controls are easier to use with a mouse.