Kuder–Richardson Formula 20

In psychometrics, the Kuder–Richardson Formula 20 (KR-20), first published in 1937, is a measure of internal consistency reliability for measures with dichotomous choices. ^[1]

5 relations: Cronbach's alpha, Dichotomy, Psychometrics, Reliability (statistics), Test (assessment).

Cronbach's alpha

In statistics (classical test theory), Cronbach's \alpha (alpha) is the trivial name used for tau-equivalent reliability (\rho_T)Cho (2016), https://dx.doi.org/10.1177/1094428116656239 as a (lowerbound) estimate of the reliability of a psychometric test.

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Dichotomy

A dichotomy is a partition of a whole (or a set) into two parts (subsets).

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Psychometrics

Psychometrics is a field of study concerned with the theory and technique of psychological measurement.

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Reliability (statistics)

Reliability in statistics and psychometrics is the overall consistency of a measure.

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Test (assessment)

A test or examination (informally, exam or evaluation) is an assessment intended to measure a test-taker's knowledge, skill, aptitude, physical fitness, or classification in many other topics (e.g., beliefs).

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Redirects here:

KR-20, Kr20, Kuder, Kuder-Richardson Formula 20, Kuder-Richardson Reliability Coefficient, Kuder-Richardson reliability coefficient 20.

References

[1] https://en.wikipedia.org/wiki/Kuder–Richardson_Formula_20

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