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standard error of measurement

standard error of measurement In test theory, the standard error of measurement is the standard deviation of the observed scores expected for people who have the same true score.

In test theory, the standard error of measurement is the standard deviation of the observed scores expected for people who have the same true score. It expresses how much a test score may vary because of measurement error.

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Sources

Drafting source: Online Statistics Education, version 2 (David M. Lane, project leader). Version 2; publisher statement snapshot 2026-10-18; SHA-256 0dcad9ee85f61f9e2bb24d26279de155ac749164ea4da2a3bffeabcf9ea471a6. “Standard Error of Measurement” (se_measure.html).
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PsychTerms (psychterms.org), CC BY 4.0, version 1. “standard error of measurement.” Development preview.

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