# What is a discrete random variable?

Given X, a random variable (see: What is a discrete random variable?^{ᛦ} )

If the function range (output values) is countable (set)^{ᛦ} , X is a discrete random variable.

## Example: Discrete random variables

X: S -> Z

Where Z is the set of integers

## Example: Non-Discrete random variables

X: S -> F

Where F is the set of floats.