What is the most common measure of scale reliability?
A) Cronbach's alpha
B) Pearson correlation
C) Spearman's beta
D) Kendall's sigma

Question

Quizplus · Accepted Answer

Cronbach's alpha is the most commonly used measure of scale reliability in research. It estimates the internal consistency of a set of items in a scale or questionnaire. A value of 0.70 or higher is generally considered acceptable for research purposes. Pearson correlation, Spearman's beta, and Kendall's sigma are measures of correlation, not scale reliability.

What Is the Most Common Measure of Scale Reliability