The most common measure of index reliability is called:
A) Amado's theta
B) Bertrand's sigma
C) Cronbach's alpha
D) Dorchester's beta

Question

Quizplus · Accepted Answer

Cronbach's alpha is the most commonly used measure of index reliability, as it provides an estimate of the internal consistency of a set of scale or test items. It ranges from 0 to 1, with higher values indicating higher reliability. The other answer choices (Amado's theta, Bertrand's sigma, and Dorchester's beta) are either less commonly used or not measures of index reliability.

The Most Common Measure of Index Reliability Is Called