Binomial Distribution Calculator

Calculate binomial distribution probabilities including exact P(X=k), cumulative P(X≤k), upper tail P(X≥k), mean, variance, and standard deviation.

How to Use Binomial Distribution Calculator

Enter the number of trials (n), number of successes (k), and probability of success (p). The calculator computes exact probability P(X=k), cumulative P(X≤k), upper tail P(X≥k), plus mean, variance, and standard deviation.

Step-by-Step Instructions

  1. Enter the number of trials (n)
  2. Enter the number of successes (k) where k ≤ n
  3. Enter the probability of success (p) between 0 and 1
  4. Click Calculate to see all probability values

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