# Frequency (statistics)

(Redirected from Relative frequency)
In statistics the frequency (or absolute frequency) of an event $i$ is the number $n_i$ of times the event occurred in an experiment or study. These frequencies are often graphically represented in histograms.
$f_i = \frac{n_i}{N} = \frac{n_i}{\sum_i n_i}.$
The values of $f_i$ for all events $i$ can be plotted to produce a frequency distribution.