Tools, Technologies and Training for Healthcare Laboratories

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Z-8: Two-Sample and Directional Hypothesis Testing

This lesson describes some refinements to the hypothesis testing approach that was introduced in the previous lesson. The truth of the matter is that the previous lesson was somewhat oversimplified in order to focus on the concept and general steps in the hypothesis testing procedure. With that background, we can now get into some of the finer points of hypothesis testing.

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Z-3: An Organizer Of Statistical Terms (Part II)

Dr. Madelon F. Zady, Ph.D., talks about the nature of a relationship (correlation) and the strength of a relationship (regression). These are statistical relationships, of course. For other forms of relationship advice, we suggest you consult the webmaster or another website entirely.

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WESTGARD QC promotes the latest news, education, and tools in the quality control field. Our goal is to bring tools, technology and training into today's healthcare industry — by featuring QC lessons, QC case studies and frequent essays from leaders in the quality control area. This is also a reference source for quality requirements, including CLIA requirements for analytical quality. This website features the best explanation of the Multirule ("Westgard Rules") and how to use them. For laboratory and healthcare professionals looking for educational and reference material in the quality control field.

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