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Base Rate · Rigorous Reasoning · Rigorous Reasoning

Concept · Foundations

Base Rate

The background prevalence or prior frequency relevant to the hypothesis being assessed.

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Why it matters

Ignoring the base rate is the most common and most costly Bayesian error.

Where this shows up

Units and lessons using this concept

Following the links will take you to the page where this term is introduced in context.

Units (1)

Bayesian Probability: Updating Belief with EvidenceStudents learn the logic of Bayesian reasoning, including priors, likelihoods, posterior updating, base rates, and the disciplined use of…

Lessons (1)

Base Rates and Conditional ProbabilityBayesian Probability: Updating Belief with Evidence

Related

Other concepts in Foundations

A, E, I, O Propositions Accessibility Relation Argument Atomic Statement Bayes Factor Calibration Cardinality Cartesian Product Categorical Proposition Categorical Syllogism Circularity Compound Statement