A listing of all unique values or ranges of values in a set of data, along with an enumeration of the number of time each value or range of values is actually observed in that set. In a relative frequency distribution, the actual frequency of observations is replaced by the corresponding proportion of the total number of observations.
A numerical tabulation in which the different observed values of a variable, or the different outcomes of an event, are grouped into classes, and the frequencies for each of these classes are given.
A range of conditions, often represented in graph form, in which each item is paired with the number of observed events or measurements meeting those conditions. For example, a list of price ranges paired with the number of cars available in each price range is a frequency distribution. Frequency distributions are commonly used in statistical analysis.