Relative Frequency of a Dataset
Each data frequency is often expressed as an absolute number, i.e. the number of times each data repeats.
It can be convenient to express the frequency relative to the total number of data n.
For example, if there are 20 data and one of the values repeats 2 times, the relative frequency is
2 / 20 = 0.1
It can be also expressed as a percentage:
2 / 20 * 100 = 10%
We are given the frequency table with the absolute frequencies as follows:
0 14
1 16
2 16
3 2
4 2
The total number of data is n = 14 + 16 + 16 + 2 + 2 = 50
Dividing each frequency by 50, we get:
0 0.28
1 0.32
2 0.32
3 0.04
4 0.04
Expressing in percentages:
0 28%
1 32%
2 32%
3 4%
4 4%