# Definition:Frequency (Descriptive Statistics)

## Definition

Let $S$ be a sample or a population.

Let $\omega$ be a qualitative variable, or a class of a quantitative variable.

The frequency of $\omega$ is the number of individuals in $S$ satisfying $\omega$.

## Also known as

This concept is also referred to as the absolute frequency of $\omega$, so as to distinguish it explicitly from relative frequency