---
tag: 0X2J0VY6DN
kind: concept
name: Discrete random variable
aliases: [discrete-distribution]
msc: ["60E05"]
sources:
  - url: https://en.wikipedia.org/wiki/Probability_distribution
    locator: Discrete probability distribution
---

## Summary

A discrete random variable is a random variable whose values lie, with probability one, in a countable set.
Its law is described by the probabilities of the single values. The node [[discrete random variable|0J6Z6H5VQJ]] gives the precise definition.