Cronbach's alpha is to similarity of scores on test items as average proportional distance is to
A) difference in scores on test items.
B) inter-item consistency.
C) test-retest reliability.
D) parallel forms reliability.

Question

Quizplus · Accepted Answer

Cronbach's alpha measures the internal consistency or average correlation of items within a test, indicating how closely related the test items are to one another. Average proportional distance, on the other hand, measures the difference in scores on test items, indicating how much the scores on different items vary from each other.

Cronbach's Alpha Is to Similarity of Scores on Test Items