THE VIRUS OF VARIATION & PROCESS BEHAVIOR CHARTS
A GUIDE FOR THE PERPLEXED
The Virus of Variation & Process Behavior Charts is an introduction to the reliably overlooked but nevertheless ever present influence of variation on our world. Using the story of the 19th century Hungarian physician Ignaz Semmelweis as a guide, it leverages a real problem with real consequences to highlight the value of understanding variation and the mechanisms by which business and industry can diagnose and treat it. Some of the topics covered include:
How to build a process behavior chart (control chart)
How to characterize process behavior
The right (and wrong) way to calculate process limits
A review of common data visualizations
The principles of process improvement
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In the meantime head over to the BQI bookshelf for essays covering topics ranging from the theory of Statistical Process Control (SPC) to case studies on supplier quality improvement.
“While every process displays variation, some processes display controlled variation, while others display uncontrolled variation.”
— Donald J. Wheeler, Understanding Statistical Process Control