According to classical test theory, if the observed variance of a test is 50 and the true variance is 40, what is the estimated reliability of the test?
A)0.40
B)0.50
C)0.80
D)0.90

Question

According to classical test theory, if the observed variance of a test is 50 and the true variance is 40, what is the estimated reliability of the test? ​
A)0.40
B)0.50 ​
C)0.80 ​
D)0.90

Quizplus · Accepted Answer

According to classical test theory, the reliability of a test can be estimated using the formula: reliability = true variance / observed variance. Plugging in the given values, we get: reliability = 40 / 50 = 0.80.

According to Classical Test Theory, If the Observed Variance of a Test