Category:Quartiles

This category contains results about Quartiles.
Definitions specific to this category can be found in Definitions/Quartiles.

Let $D$ be a finite collection of data regarding some quantitative variable.

Let $D$ be divided into precisely $4$ class intervals.

A $Q$th quartile is a value in the interval defined by the $Q$th class such that:

$\dfrac Q 4$ of the data in $D$ fall at or below the value chosen

$1 - \dfrac Q 4$ of the data in $D$ fall at or above the value chosen.