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interquartile range

interquartile range The interquartile range is the difference between the 75th percentile and the 25th percentile.

The interquartile range is the difference between the 75th percentile and the 25th percentile. It is a robust way to describe how spread out scores are.

Also see

Sources

Drafting source: Online Statistics Education, version 2 (David M. Lane, project leader). Version 2; publisher statement snapshot 2026-10-18; SHA-256 0dcad9ee85f61f9e2bb24d26279de155ac749164ea4da2a3bffeabcf9ea471a6. “Interquartile Range” (interquartile_range.html).
public-domain-US · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: 8d63b7b36cc53700183071c9bcb48b8b31f2a8c65c034a64cbc228dc851977d4

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PsychTerms (psychterms.org), CC BY 4.0, version 1. “interquartile range.” Development preview.

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