Spearman–Brown prediction formula

formula relating psychometric reliability
Thing general Q1518773
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Spearman–Brown prediction formula

Summary

Spearman–Brown prediction formula ranks in the top 2% of general entities by monthly Wikipedia readership (143 views/month).[1]

Key Facts

  • Charles Spearman is named after Spearman–Brown prediction formula[2].
  • William Brown is named after Spearman–Brown prediction formula[3].

Body

Origins

Things named after include Charles Spearman[2], a psychologist[4], 1863–1945[5], of United Kingdom[6], awarded the Fellow of the Royal Society[7] and William Brown[3], a psychologist[8], 1881–1952[9], of United Kingdom[10].

Why It Matters

Spearman–Brown prediction formula ranks in the top 2% of general entities by monthly Wikipedia readership (143 views/month).[1] It has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[11]

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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). Spearman–Brown prediction formula. Retrieved April 10, 2026, from https://4ort.xyz/entity/spearman-brown-prediction-formula
MLA “Spearman–Brown prediction formula.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/spearman-brown-prediction-formula.
BibTeX @misc{4ortxyz_spearman-brown-prediction-formula_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Spearman–Brown prediction formula}}, year = {2026}, url = {https://4ort.xyz/entity/spearman-brown-prediction-formula}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Spearman–Brown prediction formula — https://4ort.xyz/entity/spearman-brown-prediction-formula (retrieved 2026-04-10)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 ['1l0irN', 'GZ8g']
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  2. 9w ago · Yirba · 2026-06-20 view diff on Wikidata ↗
    Named after Charles Spearman, William Brown
    Aliases
    Named after
    P14541 ['1l0irN', 'GZ8g']
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/37444|batch #37444]]: Encyclopedia of China (Third Edition) ID (2026) ([[Property:P14541]]) 2"
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