The reliability coefficient is
A)the mean of the observed scores.
B)the variance of the observed scores.
C)the ratio of the mean of the true scores on a test to the mean of the observed scores.
D)the ratio of the variance of the true scores on a test to the variance of the observed scores.

Question

Quizplus · Accepted Answer

The reliability coefficient is a measure of the consistency of a test, calculated as the ratio of the variance of the true scores to the variance of the observed scores. This indicates how much of the variation in test scores is due to true differences in what is being measured, as opposed to random error.

The Reliability Coefficient Is