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Probability Distribution Calculator

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Compute PDF/PMF and CDF values for the normal, binomial, and Poisson distributions.

Derivative Calculator

Supports +, -, *, /, ^, sin, cos, tan, ln, log, sqrt, exp, abs, and parentheses. Use x as the variable.

f'(x)
(((3 * (x ^ 2)) * 1) + (cos(x) * 1))
f'(1)
3.540302

About Probability Distribution Calculator

Probability Distribution Calculator

Computes probability density (normal) or probability mass (binomial, Poisson), plus the cumulative distribution function, for three commonly used distributions in statistics coursework:

  • Normal: continuous, defined by mean (μ) and standard deviation (σ).
  • Binomial: discrete, the probability of exactly k successes in n independent trials with success probability p.
  • Poisson: discrete, models the number of events in a fixed interval given an average rate λ.

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