Taguchi’s ContributionLower Specification LimitUpper Specification LimitNominal ValueRegion of
Customer
ComplaintsRegion of
Customer
ComplaintsRegion
of
Questionable
PerformanceRegion
of
Questionable
PerformanceRegion of
Specified
PerformanceMeanLower
Control
LimitUpper
Control
LimitRegion of
Desired
PerformanceCostWhat Are the Limits to Improvement?2 Sigma3 Sigma4 Sigma5 Sigma6 SigmaBasic Quality ToolsStatistical ToolsDesign for Six Sigma (DFSS)Clean SheetChallenge in the millenniumQuestion confronting business leaders and managers:
It is not: “How do we succeed?”
It’s: “How do we stay successfully?”Change“It is not the strongest that survive, nor the fittest,
but those
most able to adapt to change.”
Charles Darwin
The Origin of Species “People do not resist change, people resist being changed.”
Beckhard
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