---
tag: 0D6J4B671D
kind: concept
name: Probability mass function
aliases: [pmf, frequency-function, discrete-density]
msc: ["60E05"]
sources:
  - url: https://en.wikipedia.org/wiki/Probability_mass_function
    locator: lead section
same_as:
  wikidata: Q869887
  wikipedia: Probability mass function
---

## Summary

The probability mass function of a discrete random variable gives the probability of each single value.
The node [[probability mass function|0WF4EJP91W]] gives the precise definition.