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The more number of standard deviations between process average and acceptable process limits fits, the less likely that the process performs beyond the acceptable process limits, and it causes a defect. Standard Deviation (also known as Sigma or σ) determines the spread around this mean/central tendency.

What is Sigma and Why is it Six Sigma? Mean is the arithmetic average of a process data set.Ĭentral tendency is the tendency of data to be around this mean. Your Sample Six Sigma Certification Test Questions.Introducing: World's First & Only Six Sigma AI Assistant (NEW).Recommend International Six Sigma Institute To Friends.Shareable Digital Badge And Six Sigma Certifications Validation Registry (NEW).Our Official Recognition and Industry Clients.Your Blog (US Army Personnel Selected Six Sigma Institute).International Organization for Project Management (IO4PM).International DevOps Certification Academy.Register Your Six Sigma Certification Program.Certified Six Sigma Yellow Belt (CSSYB).Certified Six Sigma Deployment Leader (CSSDL).Certified Six Sigma Master Black Belt (CSSMBB).Certified Six Sigma Black Belt (CSSBB).

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Sigma math competition definition of between