Definition, Meaning & Synonyms

quartile

noun

/ˈkwɔːr.taɪl/

Definition

A quartile is a statistical term that describes the division of a data set into four equal parts, where each part represents a quarter of the dataset.

Examples

The first quartile (Q1) is the value that cuts off the lowest 25% of the data.
The second quartile (Q2) is the median of the dataset.
The third quartile (Q3) separates the highest 25% of the data from the rest.

Meaning

Quartiles are used in statistics to understand the distribution of data and to identify outliers. It helps in interpreting the spread and central tendency of the data set.