Definition:Relative Frequency

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Definition

Let $S$ be a sample or a finite population.

Let $\omega$ be a qualitative variable, or a class interval 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 $S$.


Examples

Arbitrary Example

Consider the sample:

$2, 5, 3, 3, 3, 5, 3, 6, 2, 3, 9, 5$

There are $12$ observations in this sample.

The relative frequency of the observation $3$ is $\dfrac 5 {12}$.

The relative frequency of the observation $9$ is $\dfrac 1 {12}$.


Also see

  • Results about relative frequency can be found here.


Sources