Which statistic can help the test user determine how large a difference must exist for scores yielded from two different tests to be considered statistically different?
A) standard error of measurement between two scores
B) standard error of the difference between two scores
C) observed variance minus error variance
D) standard error of the difference between two means

Question

Quizplus · Accepted Answer

The standard error of the difference between two scores is the statistic that can help the test user determine how large a difference must exist for scores yielded from two different tests to be considered statistically different. This statistic takes into account the variability of both tests and is used to calculate a confidence interval around the difference between the scores. If the difference between the scores falls outside of this confidence interval, it can be considered statistically significant.

Which Statistic Can Help the Test User Determine How Large