Standards and Statistics


Standards and Statistics

Data Significance

Understanding statistical and practical significance.... more


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.... more


Standards and Statistics

Control Charts for Monitoring Test Method Performance

How control charts — I, EWMA and CUSUM — help to monitor procedure performance.... more


Standards and Statistics

Precision in ASTM Test Methods

What precision means in ASTM test methods.... more


Standards and Statistics

GESD

A look at a robust and effective technique for dealing with multiple outliers.... more


Standards and Statistics

Combining Results

How to combine the results of two samples that are statistically alike when the original data is unavailable.... more


Standards and Statistics

Inspection Redundancy: Part 2

A further look at inspection redundancy considers inspections at different locations with different devices and personnel.... more


Standards and Statistics

Inspection Redundancy

What is the purpose of multiple or redundant inspections?... more


Standards and Statistics

Can a Moving Average of the Data Be Deceptive?

Sometimes I want to take a
moving average of my data to
reduce the noise I am seeing, but
can I actually fool myself?... more


Standards and Statistics

Assessing Crack Detection Capability

What statistical procedure is used to determine the typical crack size that can be detected with a given probability?... more

More Standards and Statistics