\begin{definition}[Definition:Relative Frequency]
Let $S$ be a sample or a finite population.
Let $\omega$ be a qualitative variable, or a class of a quantitative variable.
The '''relative frequency''' of $\omega$ is defined as:
:$\map {\operatorname {RF} } \omega := \dfrac {f_\omega} n$
where:
:$f_\omega$ is the (absolute) frequency of $\omega$
:$n$ is the number of individuals in $S$.
\end{definition}