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prior probability

prior probability Prior probability is the estimated chance that an event is true before any new data are collected.

Prior probability is the estimated chance that an event is true before any new data are collected. It serves as the starting probability and can be revised after new information becomes available.

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. “Prior Probability” (prior_probability.html).
public-domain-US · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: 364a445800b417542cf734e8685f8949efbccefa390d106fe70d425129ad884a

These citations identify the drafting sources. 2/2 independent reader passes against the pinned source packet. The drafter does not count as a reader. Source institutions do not endorse this dictionary.

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

Version 1 · SHA-256: d183bef5cf90c9b8786f5b60a359b6dcd20c318da7d7190fb84ad3286f361861

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