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Chapter 14: Base Rate

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Chapter 14: Base Rate
Chapter 14 - Base Rate
Base rate is the mean number of times an event occurs divided by the mean number of times it might occur. Representativeness is a bias when people wholly and exclusively rely on pre-conceived notions. Empirical evidence suggests that people formulate their judgments by relying on representativeness and neglect the base rate. This results in sub-optimal judgments and guesses. Given a plausible base rate, the anchoring of judgment of the probability of an outcome whilst putting under question the diagnostic validity of the evidence is known as Bayesian reasoning.

Key Findings
Empirical evidence reveals that sub-optimal judgments and guesses are often made.
Bayesian reasoning is considered to be relatively reasonable.

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