Rounding Should Follow the Applicable Reporting and Decision Basis — concept overview: Measured result, Reporting convention, Decision rule.

Rounding Should Follow the Applicable Reporting and Decision Basis

A rounded display can conceal how close a result is to a requirement boundary. Use the applicable reporting and decision basis rather than choosing a convenient presentation afterward.

ILAC's decision-rule guidance addresses the basis for statements of conformity. ILAC — Decision Rules and Statements of Conformity (2019).

Preserve the underlying record

For a dimensional or laboratory result, keep the information required by the applicable method and decision process. Do not independently change reported precision to obtain a preferred pass/fail impression.

Topic map for Rounding Should Follow the Applicable Reporting and Decision Basis: Measured result; Reporting convention; Decision rule.
Topic map: Measured result → Reporting convention → Decision rule.

Clarify an ambiguous conclusion

Ask the issuer or responsible technical specialist how the statement was determined. The specification, reported result and decision rule need to remain connected. A shorter number on a summary slide should not silently replace the original evidence used for the decision.

Review distinctions for Rounding Should Follow the Applicable Reporting and Decision Basis: Precision; Rounding; Boundary.
Review distinctions: Precision; Rounding; Boundary.

Source reviewed 25 October 2026. Interpretation and original diagrams: PLUSHIP / Qunhe. Examples are illustrative.

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