Which of the following is,generally speaking,the preferred statistic for obtaining a measure of internal-consistency reliability?
A) KR-20
B) KR-21
C) Kendall's Tau
D) coefficient alpha

Question

Quizplus · Accepted Answer

Coefficient alpha, also known as Cronbach's alpha, is the most commonly used statistic for obtaining a measure of internal-consistency reliability. This is because it takes into account the correlations among all items in the scale, which provides a more accurate estimate of internal consistency than other statistics such as KR-20 and KR-21. Kendall's Tau, on the other hand, is a measure of association for ordinal data and is not appropriate for assessing internal-consistency reliability.

Which of the Following Is,generally Speaking,the Preferred Statistic for Obtaining