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Below you will find descriptions and links to 2 free statistics calculators for computing probability mass functions (PMF).

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This calculator will compute the probability mass function (PMF) for the binomial distribution, given the number of successes, the number of trials, and the probability of a successful outcome occurring.

This calculator will compute the probability mass function (PMF) for the Poisson distribution, given the number of event occurrences and the expected number of event occurrences.