Apr 16 2021
Measuring QC Efficacy: A Proposal
[The featured image is of a Vietnamese satellite undergoing final test in Japan]
As Jay Bitsack pointed out in his comments on LinkedIn about my previous post, the portability of a method from epidemiology to manufacturing quality is not a foregone conclusion. Formally, the logic of validating a vaccine seems applicable to the solution of a quality problem. They look similar when you consider only outcomes in terms of infection rates or the proportion of defectives.
There are differences between data sets from a clinical trial and tests run before and after a process change in production that may affect the applicability of a method. We examine the conditions for the approach developed by Carlo Graziani for vaccine efficacy to cross over to quality control. Then we work out the math of Graziani’s method and the means to apply it.
Jul 18 2024
What is Quality?
Professionals working on quality don’t usually discuss what it is. Instead, they assume a shared understanding that often isn’t there. Individuals with training in different approaches generalize from different experiences and talk past each other. In meetings, these divergent views are often not aired; in the uninhibited environment of social media, on the other hand, they often degenerate into insults and personal attacks. Let’s try and address this foundational issue.
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By Michel Baudin • Management • 1 • Tags: Quality, Quality Control