Get free chapters and tables of contents of our popular books like Basic QC Practices, Assuring the Right Quality Right, Six Sigma QC Design and Control, Basic Method Validation, CLIA Final Rules, Basic Planning for Quality, and more.

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View screenshots and examples of program operation of our QC Design software, EZ Rules 3.

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Links to calculators on Westgard Web that will help you determine mean, standard deviation, CV, control limits, Sigma-metrics, Critical-Errors, Dispersion, Critical number of Tests, and more.

Worksheets for interpreting "Westgard Rules", performing method validation studies, calculating Sigma-metrics, and other practical handouts.

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Copies of scientific publications, including some of the original papers on "Westgard Rules" and Internal Quality Control.

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Audio clips of lectures, interviews, etc.

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See some of the data sets and report results behind various Westgard articles.

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