Standards and Statistics



Standards And Statistics

Combining Results

Two Samples and No Original Data
Q. How can I combine the results of two samples that are statistically alike based on hypothesis testing when the original data are now unavailable?... more
Industry Sectors: 
Quality


Standards And Statistics

GESD – A Robust and Effective Technique for Dealing with Multiple Outliers

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... more
Industry Sectors: 
Quality


Standards And Statistics

Precision in ASTM Test Methods

What Precision Means
Q. What is precision and how is it interpreted in the context of ASTM test methods? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Control Charts for Monitoring Test Method Performance

Q. Which control charts are used for monitoring test method performance? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Testing for Non-Inferiority

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? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Data Significance

Understanding Statistical and Practical Significance
Q. What is the difference between statistical and practical significance? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

The Sample Max (or Min)

What It Might Be
Q. How do we judge what the sample max (or min) might be when we don’t know it — assuming a normal distribution? Click here to download the full... more
Industry Sectors: 
Quality


Standards And Statistics

Detection Limits

Q. What are detection limits and why are they important? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Uncertainty: Part 1, Relation to Precision

Q. How are precision and uncertainty related? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Uncertainty: Part 2

Estimation of Measurement Uncertainty
Q. How can measurement uncertainty be estimated? Click here to download the full article... more
Industry Sectors: 
Quality

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