Standardization News

Testing for Non-Inferiority

Q. What is non-inferiority, and how is this related to equivalence in comparing two sets of test results?

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Uncertainty: Part 1, Relation to Precision

Q. How are precision and uncertainty related?

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Use of Control Chart Interpretation Rules

Q. What are control chart rules, and which rules should be applied for control chart interpretation?

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Calibration and Regression

Q: How do we use regression analysis for calibration?

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Uncertainty in ASTM International Test Methods and ISO/IEC 17025

Q: How will the changes in ISO/IEC 17025 impact how uncertainty is treated in ASTM International standards?

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What Is Reliability?

Q. What does the field of reliability involve?

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Control and Specification Limits

Q. How many batches do we need to evaluate a control or specification limit?

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Meeting Material Specs, Part 2

Q. How do measurement error and process capability affect the probability that a product meets a specification? What is the relationship between parameter estimates in Statistical Process Control…

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Q. What is the minimum number of data points recommended to estimate standard deviation?…

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Meeting Material Specs

Q. Is there an important connection between the process capability indices (CPU and CPL) and the precision-to-tolerance ratio?

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