Data Points
Q: Can I infer something about a population or process based on a point estimate? A: It is risky to use a point estimate based on a single sample of data to infer something about a population or process since it does not account for sources of… more
Industry Sectors:

Data Points
Q. If there is no information on how results should be interpreted when comparing a test result to a specification limit, should we use the absolute or the rounding method? A. The standard practice for using significant digits in test data to… more
Industry Sectors:

Data Points
Participation in interlaboratory comparison studies is of high importance for laboratories. Accredited laboratories, and many laboratories that provide testing within a regulatory framework, have a requirement to demonstrate their performance by… more
Industry Sectors:

Data Points
The use of reference materials in the laboratory is widespread. These materials are most often used as control samples for control charting, drift correction, second-source verification of calibration, method validation, evaluation of method bias… more
Industry Sectors:

Data Points
Q. What are the basic concepts of measurement? A. ASTM International members have a broad range of backgrounds, which are necessary for their individual fields. However, not everyone may have the same level of familiarity with measurement quality… more
Industry Sectors:

Data Points
The Poisson distribution is one of the most important distributions in all of statistics. It is a discrete distribution and counts certain types of events in time or over some other observational region such as area, volume, or distance. The… more
Industry Sectors:

Data Points
Q: How can probabiity of detection (POD) be estimated for a given target size using find/no-find data from a nondestructive testing (NDT) system? A: In the aerospace industry, an NDT inspector may be required to find a crack-like defect of a given… more
Industry Sectors:

Data Points
When I received my undergraduate degree in chemistry, I never expected to use statistics to the degree I do today. My first career job was in a quality lab for a pharmaceutical manufacturer. I thought the full extent of my mathematics usage would… more
Industry Sectors:

Data Points
Q. In which other situations does the alpha risk of multiple tests need to be controlled? A. Click HERE to download the full article and read the answer.
Industry Sectors:

Data Points
Q. How does equivalence testing avoid a multiplicity correction by utilizing the IUT principle? A. Click HERE to download the full article and read the answer.
Industry Sectors: