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What is Cronbach’s Alpha?

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cronbach's alpha

What is Cronbach’s Alpha?

Lets Start With Some Definitions: Cronbach’s Alpha is mathematically equivalent to the average of all possible split-half estimates, although that’s not how we compute it (socialresearchmethods.net). Cronbach’s alpha will generally increase when the correlations between the items increase. For this reason the coefficient is also called the internal consistency or the internal consistency reliability of […]

arnold on Oct 05, 2008

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coefficient of equivalence

What is Reliability in terms of classical test theory?

Explain reliability in terms of classical test theory: Nunnally (1967) defined reliability as “the extent to which [measurements] are repeatable and that any random influence which tends to make measurements different from occasion to occasion is a source of measurement error” (p. 206). There are many factors can prevent measurements from being repeated perfectly. Crocker […]

arnold on Sep 28, 2008