Probability Distribution Simulator

Visualize binomial and normal distributions by adjusting parameters.

About this tool

The Distribution Simulator plots binomial and normal probability distributions while you adjust their parameters. It helps build intuition by showing how probabilities respond to changes in the inputs.

Common use cases

  • Visualize how shape and spread change as n, p, μ, or σ vary.
  • Support teaching of introductory statistics or probability courses.
  • Develop intuition before running a hypothesis test or confidence interval.
  • Prepare visuals for slides, articles, or study notes.