Answer
NUMBER
PROPORTION
Work Step by Step
Let's take an example along with explanations:
We have a list of letters as follows $$j, o, d, s, a, o, j, m, o, i, x$$
Remember that when we find the frequency distribution, we count HOW MANY TIMES that a category of data occurs among all the raw data.
For example, in the list above, the letter $j$ occurs 2 times. So we say that the frequency distribution of $j$ is 2.
Therefore, the frequency distribution lists the NUMBER of occurrences of each category of data.
However, when we find the relative frequency distribution, we take the frequency distribution of a category data and DIVIDE IT BY the sum of ALL FREQUENCIES to get the proportion of observations within a category.
Again, look at the list above. It contains in total $11$ letters. As counted before, the frequency of letter $j$ is $2$. Therefore, the relative frequency distribution of letter $j$ is $\frac{2}{11}$.
So, the relative frequency distribution lists the PROPORTION of occurrences of each category of data.
