What is the unexplained difference between the true score (T) and the obtained score (X) called?
A) systematic error
B) random error
C) internal consistency
D) coefficient alpha

Question

Quizplus · Accepted Answer

The unexplained difference between the true score and the obtained score is called random error. This is because it is unpredictable and can vary from test to test. Systematic error, on the other hand, is a consistent bias in the measurement process that affects all scores in a particular way. Internal consistency and coefficient alpha are both measures of reliability, but they do not refer specifically to the difference between true and obtained scores.

What Is the Unexplained Difference Between the True Score (T)