Probability Distributions Calculator
Calculate PDF and CDF for Normal (Gaussian), Binomial, and Poisson distributions. Visualize probability mass and density.
Complete User Guide
Select a distribution type, enter parameters (like mean/SD or trials/prob), and value x. Get the probability density and cumulative result.
The Mathematical Formula
z = (x - μ) / σ
Normal: Bell curve defined by mean and SD. Binomial: Successes in N trials. Poisson: Events in interval with rate λ.
Frequently Asked Questions
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