The variance of obtained scores is
A) the variance of true scores minus the variance of errors of measurement
B) the variance of true scores plus the variance of errors of measurement
C) The variance of errors of measurement minus the variance of true scores
D) none of the above

Question

Quizplus · Accepted Answer

The variance of obtained scores is the sum of the variance of true scores and the variance of errors of measurement, reflecting how observed scores vary around their true mean due to both true score variability and measurement error.

The Variance of Obtained Scores Is