Relative Frequency


Relative Frequency is How often something happens divided by all outcomes.

To compute relative frequency, one obtains a frequency count for a subgroup of the population and a frequency count for the total population. The relative frequency is:

How to Find Relative Frequency

Relative frequency = Subgroup count / Total count

The above equation expresses relative frequency as a proportion. You can also express it as a percentage. For example, a relative frequency of 1/5 is equivalent to a percentage of 20%.


1. You has won 3 games from a total of 4 games played
 CountRelative frequency
Win33/4 = 75%
Lose11/4 = 15%
2. Survey of favorite PC Brand survey
 CountRelative frequency
MacBook1010/100 = 10%
ASUS2020/100 = 20%
MSI3030/100 = 30%
ACER4040/100 = 40%
TOTAL100100/100 = 100% = 1

All the Relative Frequencies add up to 1 (except for any rounding error).

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Discrete and Continuous Data

Decimals, Fractions, and Percentages

Convert Percents to Fractions

Convert Decimals to Fractions

Data Index