The standard deviation of a theoretically normal distribution of test scores obtained by one person on equivalent tests is
A) the standard error of the difference between means.
B) the standard error of measurement.
C) the standard deviation of the reliability coefficient.
D) the variance.

Question

Quizplus · Accepted Answer

The standard deviation of a theoretically normal distribution of test scores obtained by one person on equivalent tests is known as the standard error of measurement. This is a measure of how much error is introduced into a test score due to random errors in measurement. It reflects the degree to which scores on a test vary from one time to the next, even if the same person takes the test.

The Standard Deviation of a Theoretically Normal Distribution of Test