How to Round Uncertainty to 2 Significant Digits (ISO 17025)
Key Takeaways: Rounding Uncertainty & Results The 2-Digit Rule: Per JCGM 100:2008 (GUM) and ILAC P14, expanded uncertainties must be reported to a maximum of two significant digits. Consistency Requirement: Measurement results must be rounded to match the final decimal place of the rounded uncertainty to avoid audit nonconformities. Core Rounding Methods: Laboratories typically […]
