## About

Rank is a statistic / function that calculates the rank of a value in a group of values.

The position of an element in a sequence is its rank or index.

This function is used in:

- top-N and bottom-N reporting.
- quantile analysis A quantile function will always rank the data before giving any output.

Rank is a display function.

See also Ordinal Data

## Calculation Scope

Rank can be used:

- As an aggregate function (on the whole set)
- As an window function (on a subset of the set)