The ratio of how often a value occurs to the total number of outcomes is the:

1. Frequency counts occurrences and relative frequency scales that count. 2. A relative frequency is the ratio, as a fraction or proportion, of the number of times a value of the data occurs in the set of all outcomes to the total number of outcomes. 3. It therefore always falls between zero and one. 4. Frequency alone is a plain count and can be any whole number. _Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 1 'Sampling and Data', sections 1.1-1.4_