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Multiple comparisons problem — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Multiple_comparisons_problem
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-06T12:38:51.406Z
SHA-256 of the archived text: 2df85a419a462bf70282eb4b30b6dcf7146156b99b33fa37cf8f85ac3b0ecae3
Stable URL of this page: https://metraipolis.com/documento/dc_cf2cc86aeca1

How to cite

Multiple comparisons problem — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Multiple_comparisons_problem (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_cf2cc86aeca1 (Metraipolis archive dc_cf2cc86aeca1, sha256 2df85a419a462bf70282eb4b30b6dcf7146156b99b33fa37cf8f85ac3b0ecae3)

BibTeX

@misc{dccf2cc86aeca1,
  title = {Multiple comparisons problem — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Multiple_comparisons_problem},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_cf2cc86aeca1; sha256 2df85a419a462bf70282eb4b30b6dcf7146156b99b33fa37cf8f85ac3b0ecae3},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Multiple_comparisons_problem. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Multiple comparisons, multiplicity or multiple testing problem occurs when many statistical tests are performed on the same dataset. Each test has its own chance of a Type I error (false positive), so the overall probability of making at least one false positive increases as the number of tests grows. In statistics, this occurs when one simultaneously considers a set of statistical inferences or estimates a subset of selected parameters based on observed values. The probability of false positives is measured through the family-wise error rate (FWER). The larger the number of inferences made in a series of tests, the more likely erroneous inferences become. Several statistical techniques have been developed to compensate for the number of inferences being made—for example, by requiring a stricter significance threshold for individual comparisons.

Tema degli esploratori: statistica e scienza dei dati (deposito sistematico; ricerca «statistical inference»).
Fonte: Wikipedia in inglese, voce «Multiple comparisons problem» — https://en.wikipedia.org/wiki/Multiple_comparisons_problem
Wikidata Q1038757: «problem where one considers a set of inferences simultaneously based on the observed values» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q1038757
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Multiple_comparisons_problem?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1376255469, consultata il 2026-10-06T10:54:49.541Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 7dfb812ef180dcf94e6cca62295068b9e893f3eb7c45f6665fa5370116a163ca