Standardization News

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Providing Statistical Confidence to Pass
Q. Lots are released based on comparing test results from a sample to lot acceptance procedure criteria. If a set of test results meets the lot acceptance procedure criterion, how can I be assured that another sample from the lot would also pass the... more
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Using a Q-Q Plot
Q. How can I determine if my data comes from a normal distribution? A. Click HERE to download the full article and read the answer. 
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Statistical Models in Practice
Q. What statistical procedure is used to determine the typical crack size that can be detected with a given probability? A. Click HERE to download the full article and read the answer.
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Q. I suspect that my data contain more than one outlier. Is there a preferred technique to use to isolate them? Click HERE to download the full article and read the answer. Editor’s Note: Another standard can now be used to avoid the masking... more
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A form of equivalence helps to compare a new lab, instrument or test method with an established one.
Q. What is non-inferiority, and how is this related to equivalence in comparing two sets of test results? A. Click HERE to download the full article and read the answer.  
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Q. How are precision and uncertainty related? A. Click HERE to download the full article and read the answer. 
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Description and Strategy
Q. What are control chart rules, and which rules should be applied for control chart interpretation? A. Click HERE to download the full article and read the answer.   
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Partners in Measurement
Q: How do we use regression analysis for calibration? A. Click HERE to download the full article and read the answer.  
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Verification and Validity
Q: How will the changes in ISO/IEC 17025 impact how uncertainty is treated in ASTM International standards? A:  Click HERE to download the full article and read the answer.
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Key Concepts and Terminology
Q. What does the field of reliability involve? A. Click HERE to download the full article and read the answer.  
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