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margin of error

margin of error Margin of error is the amount by which a sample statistic differs from either end of its confidence interval when the statistic is used to estimate a population parameter.

Margin of error is the amount by which a sample statistic differs from either end of its confidence interval when the statistic is used to estimate a population parameter. It expresses the distance from the estimate to the interval boundary, commonly for a 95% confidence interval unless another level is specified.

Also see

Sources

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

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