Standards Index · ISO/IEC
ISO 13528:2022
Statistical methods for use in proficiency testing by interlaboratory comparison
What it covers
The statistical toolbox for proficiency testing: assigned values, performance statistics such as z-scores and En numbers, and homogeneity/stability assessment.
Summary written for this index — consult the official text for normative requirements.
Related standards
ISO 5725-1:2023
Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
Current
AIAG MSA-4:2010
Measurement Systems Analysis (MSA) Reference Manual, Fourth Edition
Current
ISO 21748:2017
Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty evaluation
Current
ISO 5725-2:2025
Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility
Current
NIST SOP 9 (2019)
Control Charts for Calibration of Mass Standards
Current