Simpson's paradox

phenomenon in probability and statistics, in which a trend appears in several different groups of data but disappears or reverses when these groups are combined
Thing paradox Q757290
Simpson's paradox
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Simpson's paradox

Summary

Simpson's paradox is a paradox[1]. It ranks in the top 2% of paradox entities by monthly Wikipedia readership (3,514 views/month).[2]

Key Facts

  • Simpson's paradox is credited with the discovery of Karl Pearson[3].
  • Simpson's paradox is credited with the discovery of George Udny Yule[4].
  • Simpson's paradox is credited with the discovery of Edward H. Simpson[5].
  • Simpson's paradox's image is recorded as Simpson's paradox continuous.svg[6].
  • Simpson's paradox's instance of is recorded as paradox[7].
  • Edward H. Simpson is named after Simpson's paradox[8].
  • Simpson's paradox's subclass of is recorded as paradox[9].
  • Simpson's paradox's subclass of is recorded as cognitive bias[10].
  • Simpson's paradox's Commons category is recorded as Simpson's paradox[11].
  • Simpson's paradox's Freebase ID is recorded as /m/0ch7g[12].
  • Simpson's paradox's significant event is recorded as Sex bias in graduate admissions: data from berkeley[13].
  • Simpson's paradox's MathWorld ID is recorded as SimpsonsParadox[14].
  • Simpson's paradox's Stanford Encyclopedia of Philosophy ID is recorded as paradox-simpson[15].
  • Simpson's paradox's Quora topic ID is recorded as Simpsons-Paradox[16].
  • Simpson's paradox's maintained by WikiProject is recorded as WikiProject Mathematics[17].
  • Simpson's paradox's Microsoft Academic ID is recorded as 192251291[18].
  • Simpson's paradox's Brilliant Wiki ID is recorded as simpsons-paradox[19].
  • Simpson's paradox's Golden ID is recorded as Simpson's_paradox-EK58R[20].
  • Simpson's paradox's RationalWiki ID is recorded as Simpson's_paradox[21].

Body

Works and Contributions

Credited discoveries include Karl Pearson[3], a mathematician[22], 1857–1936[23], of United Kingdom[24], awarded the Fellow of the Royal Society[25], specialised in mathematical statistics[26]; George Udny Yule[4], a mathematician[27], 1871–1951[28], of United Kingdom[29], awarded the Fellow of the Royal Society[30]; and Edward H. Simpson[5], a mathematician[31], 1922–2019[32], of United Kingdom[33], awarded the Companion of the Order of the Bath[34].

Why It Matters

Simpson's paradox ranks in the top 2% of paradox entities by monthly Wikipedia readership (3,514 views/month).[2] It has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[35] It is known by 10 alternative names across languages and contexts.[36]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [6] . wikidata.org.
  2. [7] . wikidata.org.
  3. [3] . Mathematical Contributions to the Theory of Evolution. wikidata.org.
  4. [4] . wikidata.org.
  5. [5] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . Freebase Data Dumps. wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . Quora. wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . golden.com. Retrieved . golden.com. Provenance: wikidata.org.
  19. [21] . wikidata.org.

Inline context (facts about related entities)

  1. [22] . Wikidata. wikidata.org. → on this site
  2. [23] . Wikidata. wikidata.org. → on this site
  3. [24] . Wikidata. wikidata.org. → on this site
  4. [25] . Wikidata. wikidata.org. → on this site
  5. [26] . Wikidata. wikidata.org. → on this site
  6. [27] . Wikidata. wikidata.org. → on this site
  7. [28] . Wikidata. wikidata.org. → on this site
  8. [29] . Wikidata. wikidata.org. → on this site
  9. [30] . Wikidata. wikidata.org. → on this site
  10. [31] . Wikidata. wikidata.org. → on this site
  11. [32] . Wikidata. wikidata.org. → on this site
  12. [33] . Wikidata. wikidata.org. → on this site
  13. [34] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [35] . Wikidata sitelinks. wikidata.org.
  3. [36] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Simpson's paradox. Retrieved May 3, 2026, from https://4ort.xyz/entity/simpson-s-paradox
MLA “Simpson's paradox.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/simpson-s-paradox.
BibTeX @misc{4ortxyz_simpson-s-paradox_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Simpson's paradox}}, year = {2026}, url = {https://4ort.xyz/entity/simpson-s-paradox}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Simpson's paradox — https://4ort.xyz/entity/simpson-s-paradox (retrieved 2026-05-03)

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