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Frequency estimation is a judgment task in which one conceptualizes and conveys the anticipated likelihood of an event. It is often used to measure perceptions of personal risk of disease or benefits of treatment in quantitative terms and is therefore an important component of medical decision making. In this entry, a frequency format is distinguished from other formats used to present probabilistic information, the skills needed to estimate frequency are highlighted, and the following pertinent issues related to frequency estimation are discussed: (a) the reasoning strategies used to estimate frequency, (b) the biases associated with frequency estimation, and (c) the importance of response scale and format in frequency estimation.

Frequency Format

A frequency format is one way to represent a probabilistic statement. Other formats commonly used to ...

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