Statistics & Probability

Range

A measure of spread: largest value minus smallest value.

Definition

Range is sensitive to outliers — a single extreme value changes the range dramatically. The interquartile range (Q3 − Q1) is more robust.

Example

Range of 4, 7, 9, 12, 18 is 18 − 4 = 14.

Used in these topics

Related terms

Interquartile range (IQR)

A measure of spread: Q3 − Q1. Less sensitive to outliers than the range.

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