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Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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Learning ObjectivesLearning Objectives
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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DMAICDMAIC
• DMAIC is a structure problem-solving techniqueDMAIC is a structure problem solving technique
consisting of the following steps:
– Define
– Measure
– Analyze
– Improve
– Control
DMAIC i ll i d i h i i b i• DMAIC is usually associated with six sigma, but it
can be used with any business or process
improvement effort
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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improvement effort
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Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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ProjectsProjects
• Essential part of DMAICEssential part of DMAIC
• Breakthrough opportunity
i i l i i• Financial systems integration
• Value opportunity of a project must be clear
• Project selection
• Project managementProject management
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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If the improvement goal is 50%, then x = 11 years, and if it’s
75% then x = 5 years.
Must focus on projects that have high impact
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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2.2 The Define Step
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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A process map or value stream map may also beA process map or value stream map may also be
prepared. These should be completed by at least
the end of the Measure step.
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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The Define TollgateThe Define Tollgate
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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2 3 The Measure Step2.3 The Measure Step
• Purpose is to evaluate and determine the present process
state
• Identify key process input variables (KPIV) and key
process output variables (KPOV)process output variables (KPOV)
• Data – from historical records, from sampling, from
observational studies
Hi b l P h di• Histograms, box plots, Pareto charts, scatter diagrams,
stem-and-leaf diagrams may all be useful
• In some businesses, the measurement system must beIn some businesses, the measurement system must be
developed
• Measurement systems capability may be important
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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The Measure TollgateThe Measure Tollgate
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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2 4 The Analyze Step2.4 The Analyze Step
• Determine cause-and-effect relationshipsDetermine cause-and-effect relationships
• Sources of variability – common cause versus
assignable causeassignable cause
• Tools – control charts, hypothesis testing,
fid i l i d l f ilconfidence intervals, regression models, failure
modes and effects analysis
• Discrete event simulation
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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The Analyze TollgateThe Analyze Tollgate
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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2 5 The Improve Step2.5 The Improve Step
• Process redesign to reduce bottlenecksProcess redesign to reduce bottlenecks
• Mistake-proofing
S i i l l i l l d i d• Statistical tools – particularly designed
experiments
• DOX can be applied to either the physical
process or a computer model of the process
• Pilot test the solution to confirm that it will
solve the problem
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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The Improve TollgateThe Improve Tollgate
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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2 6 The Control Step2.6 The Control Step
• Complete all remaining work on projectComplete all remaining work on project
• Provide the process owner with a process
control plancontrol plan
• Training documents (if appropriate) should be
id dprovided
• Methods and metrics for future audits
• Transition plan to the new process might
include a validation step
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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The Control TollgateThe Control Tollgate
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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Chapter Case StudiesChapter Case Studies
• Litigation documentsLitigation documents
• Improving on-time delivery
i i li i b k• Improving service quality in a bank
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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Learning ObjectivesLearning Objectives
Chapter 2 Introduction to Statistical Quality Control, 6th Edition by Douglas C. Montgomery.
Copyright (c) 2009 John Wiley & Sons, Inc.
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