Table of Contents

## Definition

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%.

## Examples

1. You has won 3 games from a total of 4 games played | Count | Relative frequency |

Win | 3 | 3/4 = 75% |

Lose | 1 | 1/4 = 15% |

Count | Relative frequency | |

MacBook | 10 | 10/100 = 10% |

ASUS | 20 | 20/100 = 20% |

MSI | 30 | 30/100 = 30% |

ACER | 40 | 40/100 = 40% |

TOTAL | 100 | 100/100 = 100% = 1 |

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