According to classical test theory which of the following statements is true?
A) A test score is equal to the true score plus or minus test error
B) Reliability is an estimate of the ratio of true test score variance to observed test variance
C) The more reliable a test is the less unsystematic error is associated with it.
D) All of the above

Question

Quizplus · Accepted Answer

All of the statements are true according to classical test theory. A) describes the fundamental equation of classical test theory, where a person's observed score is the sum of their true score and error. B) defines reliability as the proportion of variance in observed scores that reflects variance in true scores. C) indicates that as reliability increases, the amount of error (unsystematic error) in the test scores decreases.

According to Classical Test Theory Which of the Following Statements