# Frequency Tables

This lesson explains how to create frequency tables and relative frequency tables.

## What is a Frequency Table?

A frequency table is a table that shows how many times certain values occur in a data set.

A relative frequency table is a table that shows how many times certain values occur relative to all the observations in a data set.

Let’s walk through an example on how to construct both of these tables.

## Example: Constructing Frequency Tables

Suppose we have the following data set:

To make a frequency table of the variable Favorite Color, we simply count how many times each color shows up:

And to make a relative frequency table of the variable Favorite Color, we simply count how many times each color shows up and divide by the total number of observations in the data set.

For example, purple shows up 5 times and there are 20 total observations. This means the relative frequency of purple is 5/20 = 25%. We can do the same calculation for the other colors as well: