A reliability coefficient of .60 suggests that
A)64% of the variance on the test is error.
B)40% of the variance on the test is error.
C)78% of the variance on the test is error.
D)the test can be used for clinical purposes but not for research.

Question

Quizplus · Accepted Answer

A reliability coefficient of .60 suggests that 40% of the variance on the test is error, as reliability is the proportion of the total variance attributed to true score variance. Therefore, 1 - 0.60 = 0.40, or 40%, represents error variance.

A Reliability Coefficient of .60 Suggests That