Source

The relative frequency table of a set of numbers:

The relative frequency of an item is the ratio of the frequency of the item to the total number of all frequencies of the items in the set.

For example:

Draw a table showing the frequencies and relative frequencies for all the following data items:

First, we have to know what are the available items.

We have the numbers 1, 2, 3, 4 and 5 and so we place them on the item column.

Next, we have to find the total amount of items available.

We have 5 columns and 4 rows, so the total amount of items is 20.

Let's start by finding the frequency of the number 1.

We should count how many times the number 1 is available, which is 4:

Now, we need to find the relative frequency of the number 1 that is equal to the frequency over the total, so it is 4/20 (or 20%).
We do the same with the other numbers too:

Now try:

Form the frequency distribution table for the ages of 20 people, given below:

Solution:

In Part 4, I will explain how to draw a histogram.
Part 1: https://steemit.com/mathematics/@ghostgtr/mathematics-statistics-application-on-cumulative-frequency-part-1
Part 2: https://steemit.com/mathematics/@ghostgtr/mathematics-statistics-application-on-mean-part-2

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