ETS Praxis School Psychology Practice Test

What does the standard error of measurement determine?

The confidence interval for the observed score The inter-rater reliability The percentile rank The reliability coefficient

Correct Answer:

The confidence interval for the observed score

Explanation:

The standard error of measurement shows how precise a single test score is. It reflects how much the observed score can vary because the test isn’t perfectly reliable. Because of that unreliability, we use the SEM to form a confidence interval around the observed score to estimate where the true score is likely to fall. In practice, about one SEM gives roughly a 68% chance that the true score lies within that interval, with larger multipliers giving higher confidence levels. This concept helps you interpret how much trust to place in a given score. It isn’t about how consistently different raters score (inter-rater reliability), a person’s percentile rank, or the overall reliability coefficient.

Access more questions from this quiz

Continue to ETS Praxis School Psychology Practice Test for more practice questions and the full quiz experience.

Access More Questions