Frequency: the number of times a value of the data occurs.
Relative Frequency: the ratio of the number of times a value of the data occurs in the set of all outcomes to the number of all outcomes.
The number of times a value of the data occurs is called absolute frequency.
So relative frequency is the ratio between the absolute frequency and the total number.
The relative frequency of the event E is then
Some properties of relative frequency:
In words:
- The relative frequency of each outcome is a number between 0 and 1 (inclusive).
- The relative frequencies of all the outcomes add up to 1.
- The relative frequency of an event E is the sum of relative frequencies of individual outcomes in E.
