Lean Six Sigma Green Belt Study Guide -...
Transcript of Lean Six Sigma Green Belt Study Guide -...
Lean Six Sigma Green Belt
Study Guide
Name: ____________________________
Print this guide double sided and bind it for a booklet feel.
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Letter from the President
First, let me congratulate you for pursing your Lean Six Sigma Green Belt certification and welcome to the American
Association for Lean Six Sigma Certification (AALSSC). Obtaining a Lean Six Sigma certification is one of the most
rewarding and valuable professional accomplishments. You will feel an increase in self-confidence, more capable when
leading people and problem solving abilities well above your peers. The professional opportunities for a Lean Six Sigma
Green Belt are vast and across all industries. This is an exciting time for Lean Six Sigma professionals and I welcome you
to the community.
The amount of knowledge required for an AALSSC certification is extensive, but not overwhelming. You can do it! The
core tenants of AALSSC is the certifications must be relevant and attainable. By focusing on relevance some areas of
study deemed not relevant enough are removed – making the exam more attainable. As a certified Lean Six Sigma Green
Belt you will be expected to effectively facilitate teams, be a process improvement specialist, and a problem solving
expert. The exam tests your knowledge, skills and abilities across these focus areas.
This is your study guide, treat it as such. Write your name on it, complete it using your words and follow the concepts
outlined. By writing you will retain the information and make this study guide a useful part of your reference library. Plus,
this study guide can be used when taking an AALSSC Green Belt certification exam.
Good luck and welcome to AALSSC – your road to success.
Mr. Erik Christensen
AALSSC President
Erik Christensen
Table of Contents
Overview
Continuous Improvement
Lean Six Sigma
Certifications
Fundamentals every Green Belt must know
Quality and Value
Gemba and Kaizen
Change management and metrics
Primary impact areas of Green Belts
Team Facilitation
Stages of team development
Facilitation and decision making tools
Lean Six Sigma events and team members
Lean
Principles of Lean
8 Wastes of Lean
Six Sigma
DMAIC and Project charter
Problem solving
Problem solving tools
Root Cause Analysis
Process Improvement
See the process
Improve the process - Lean Six Sigma countermeasures
Sustain improvements - audits
Continuous Improvement
Lean Six Sigma is the combining of two methodologies – Lean and Six Sigma; which fall under a larger category of
“Continuous Improvement”.
What is continuous improvement and what other methodologies fall under it? From which methodology did Lean and Six
Sigma stem from?
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Lean and Six Sigma
Concept: Lean Six Sigma combines the process improvement benefits of Lean with the statistical process control benefits
of Six Sigma. It takes advantage of the "value-added" focus of Lean while maintaining statistical tools of Six Sigma.
What other definitions of Lean Six Sigma did you find? Which companies first started Lean and Six Sigma and when?
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Certifications
Concept: Identify individual ability to implement Lean Six Sigma - the most relevant, useful, and valuable Lean Six
Sigma certifications are Green, Black and Master Black. All other certifications have diminished return on investment and
therefore not offered by AALSSC.
MBB
Black
Belt
Green
Belt
Experienced Black Belt with ability to lead
organization through an entire transformation
Leading strategic level projects/kaizen events and
facilitating strategic planning sessions
Leading tactical level projects/kaizen events at the
front line
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Quality and Value
Concepts:
Value: What customers are willing to pay for.
Quality: Meeting or exceeding customer expectations.
How are quality and customer satisfaction related? Who defines quality? Research all you can on quality and value.
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Gemba and Kaizen
Gemba: The place of actual work.
Kaizen: Continuous Betterment (Improvement).
What is the deeper meaning behind both of these concepts? What actions are managers expected to take based on these
concepts? How do these concepts shape organizational culture?
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Change Management
Concept: Improving processes requires people to change how or what they do, any change in work requires some level of
change management.
Q x A = I : The quality of the solution multiplied by the acceptance of the people who have to implement the solution
equals the impact of that solution.
How does this formula apply to process improvement? Have you ever experienced a time when a good solution was not
fully implement due to resistance by people? What other terms are used to describe the challenge of having people be part
of the solution, rather than part of the resistance?
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Metrics
Concept: There is a need to measure improvements in order to claim an improvement.
Metrics - Quantifiable measures that can assess the performance of a process.
Purpose of a metric is to drive behavior.
Core four metrics are: Cost, quality, delivery, and safety
What are the types of metrics? How can a green belt use metrics to accomplish goals? What happened if we sacrifice one
metric for another? What dysfunctional behaviors have you seen based on how the individual was being measured, graded
or promoted? How can metrics be used in continuous improvement?
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Areas of Impact
Concept: Green belts impact is felt the strongest across four main areas of the organization.
1) Cost of Poor Quality (COPQ) – all the cost related to not producing to customer requirements (across core four
metrics).
In your experiences what impacts (costs) have you seen from errors, mistakes or defects? What are the obvious costs and
hidden costs?
2) Opportunity losses – By spending resources to respond to and fix defects the company is not exploring new ways to
satisfy the customer.
Research and explain the Kano Model? What are the key words used in the Kano model?
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Areas of Impact (cont)
3) Employee Morale - Lean Six Sigma is founded on the core concept of respect for people.
How is employee morale effected by work processes? What impact does morale have on operations? What experiences
have you had with morale effecting quality?
4) Workplace safety - Safe work environment shows respect for employees and what they contribute.
Physical work areas and processes are intertwined.
How can workplace hazards effect quality and business operations? What experiences have you had with workplace
safety?
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Team Facilitation
Concept: Facilitators contribute structure and process to interactions so groups are able to function effectively and make
high quality decisions.
To be an effective facilitator one must begin by believing the comments below:
People are intelligent, capable and want to do the right thing
Groups can make better decisions than any one person can make alone
Everyone’s opinion is of equal value; regardless of rank or position
People are more committed to the ideas and plans that they have helped to create
How do facilitators help with change management? What is the primary focus of facilitators as opposed to other team
members? Research facilitation and write all the key points below.
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Stages of team development
Concept: Groups of people go through stages as they transform into a team.
What are the stages of team development? Describe how team members act during each stage. Describe facilitator
strategies during each stage.
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Facilitator tools
Concept: Facilitators use various tools and strategies to help team’s achieve goals.
Facilitators use different tools depending on the situation. Tools include open-ended questions, close-ended
questions, probing questions, repeating back, summarizing, force field analysis, and active listening.
Research and describe the common facilitator tools listed above.
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Group Decision making tools
Concept: Facilitators and teams need decision making tools because of the complexity or difficulty of decision to be
made.
Phase I – Generate list of possible ideas or solutions.
Tool: Brainstorming – fast paced idea generation.
What are the various methods of brainstorming? What are the rules of brainstorming?
Tool: Nominal Group Technique – focused idea generation.
What is the common method for NGT? Explain what it is and how to use it below.
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Group Decision Making Tools (cont)
Phase II – Organize and narrow the ideas or solutions.
Tool: Affinity Diagram – categorize like ideas.
Describe affinity diagram and when it is normally accomplished.
Tool: N/3 – reduce the total number of ideas to make it more manageable.
Describe N/3 and when it is normally used.
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Group Decision Making Tools (cont)
Phase II (cont) – Organize and narrow the ideas or solutions.
Tool: Advocate – allowing an individual to present a position .
When it is normally accomplished.
Tool: Multi-voting – identify popular ideas and ideas to be removed from consideration.
Describe multi-voting and when it is normally used.
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Group Decision Making tools (cont)
Phase III – Evaluate and decide on way forward.
Tool: Criteria Rating – rank ideas based on criteria to help with selection.
Describe when criteria ranking is normally used and how to use it.
Tool: Straw Poll – informal vote.
Describe how to conduct a straw poll and when it is normally used.
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Group Decision Making tools (cont)
Tool: Consensus voting – determine if all team members either agree or can live with decision.
Describe how to use consensus voting.
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Lean Six Sigma Events and Project Team Members
Concept: Bring people together to form teams and accomplish a specific objective.
Point Kaizen – 1-2 day events with team leaders span of control.
Kaizen Blitz – 4-5 day event that goes across multiple function areas.
Project – 3-6 month event focused on multiple business areas.
What are some other names for lean six sigma events? What experiences have you had with events?
Champion: Person with organizational authority
Process Owner: Person with authority and accountability for the process
Facilitator: Manage meeting(s) and enables change
Team Leader: Leads team thru process – normally a SME who is accountable for specific RIE results
Team members: cross functional experts brought together to solve a specific problem
What are the responsibilities of each team member? Who selects team members? Where is the list of team members
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Lean
Lean is a systematic approach to identify waste, focus activities on eliminating it, and maximize (or make
available) resources to satisfy other requirements.
Uses the plan, do, check, act cycle for continuous improvement (PDCA).
Research and describe the how the word “Lean” was developed, what Lean is truly describing and the PDCA
cycle.
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Principles of Lean
1. Define value from the standpoint of the end customer.
2. Map the value stream.
3. Create flow by making the steps occur in tight sequence.
4. Let the customers pull value from the process by keeping pace with the rate of customer demand.
5. Continuously improve and strive for the “Ideal” process.
Further research and understand the principles of Lean.
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8 Wastes of Lean
Understand value adding vs. non-value adding steps in a process.
Transportation: Movement of material, information, people or equipment that does not add value
Inventory: More information, projects, material on hand than is needed right now
Motion: Movements of people that does not add value
Waiting: Idle time created when material, information, people, or equipment is not ready
Over-Production: Generating more than is needed right now
Over-Processing: Effort that creates no value from the customer viewpoint
Defects: Work that contains errors, re-work, mistakes or lacks something necessary
Under-Utilization: Any failure to use the time and talents of people
Research and gain a complete understanding of the 8 wastes.
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Six Sigma
Sigma σ is a statistical unit of measure which reflects process capability.
Follows DMAIC cycle for project execution.
Focuses efforts following the transfer function Y=f(x).
Who first developed six sigma as an operating philosophy? What exactly is six sigma? What exactly is DMAIC? What
exactly is the transfer function and why does it matter? Research and gain a complete understanding of six sigma.
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Six Sigma (cont)
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Project or Event Documentation
Concept: When executing a Lean Six Sigma event there is a need for documentation
Charter: Official document that authorizes project/kaizen event to move forward.
A3: Single page document organized to emphasis cause/effect, uses data for objectivity, forces brevity and
shows alignment between effort and objective.
Research about charters and charter formats. Research about A3 thinking and various types of A3s.
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Problem Solving tools
Concept: When attempting to solve a problem there are proven tools and methods which increase chance of
success.
Tool: Problem Statement - a clear, concise statement of what’s wrong.
Research and practice writing problems statements. What must a problem statement include? What cannot be
included in a problem statement?
Tool: SIPOC – provides project scope.
Research and practice developing SIPOCs.
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Problem Solving tools (cont)
Tool: SMART goal setting – used a filter to goals are valid.
Research and practice analyzing goals using SMART criteria.
Tool: SWOT analysis – internal and external analysis of a team or organization.
Research and practice completing a SWOT analysis.
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Root cause analysis
Concept: To prevent problem reoccurrence solutions must address the root of the problem.
Two types: statistical (analyzing data) and non-statistical (using the knowledge and wisdom of people).
Tool: Cause and Effect Diagram - provide structure to brainstorming.
Research and practice completing a cause and effect diagram (fishbone diagram).
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Root cause analysis (cont)
Tool: Run Chart - Monitor the behavior of a variable over time.
Research and practice run chart development.
Tool: Pareto Chart – find the few causes that have the greatest impact (aka the 80/20 principle).
Research and practice developing a Pareto chart.
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Root cause analysis (cont)
Tool: Histogram – visual display of how often something happens.
Research and practice developing a Histogram.
Tool: 5 Whys analysis – Ask “why did that occur” five times and you will find the root cause.
Research and developed complete understanding of 5 whys analysis and its pitfalls.
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Root cause analysis (cont)
Tool: Scatter Diagram – determines relationship between two variables.
Research and practice developing scatter diagram.
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Risk Analysis
Concept: plan for problems that have not yet occurred.
Tool: Failure Mode and Effects Analysis (FMEA) – quantifiably measure and compare risk, then determine
what course of action to take for each.
Research and practice developing a FMEA to include calculating risk priority number (RPN).
Develop FMEA below
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See and analyze the process
Concept: Teams must be able to see and analyze a process before they can improve it.
Tool: Process walk – see first-hand how processes are being accomplished.
Research and practice doing a process walk. Understand the data that is expected to be gathered. What are some
best practices when doing a process walk?
Tool: Value stream map – visual display of all the actions taken to bring a product or service to the customer.
Three types: Current state, Ideal state and future state.
Research and describe the three types of value stream maps, their properties, common VSM symbols and
method for completion. Practice completing one on your own.
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See and analyze the process (cont)
Tool: Spaghetti diagram – visual display of motion or transportation waste.
Research and practice developing a spaghetti diagram.
Practice Value Steam Mapping and Spaghetti Diagram below
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See and analyze the process (cont)
Tool: Waste analysis – find the waste in the process.
Tool: Timing the value stream – capture real data for how long operations take.
Lead Time – total time to transform input to output
Cycle Time – a measure of throughput
Touch Time – time spend actually working on item
Takt Time: Determines rate of production
Work in Process (WIP) – in-process inventory (no longer raw material, not finished goods)
Research and fully define and understand each time listed and how to calculate. Fully comprehend the problems related to
WIP.
Practice calculating takt time
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Develop improvement plan
Concept: To make the change from current state to future state value stream maps people have to take action. These
actions are prioritized and documented on an action plan.
Tools: PICK chart – used to prioritize the action plan.
Research PICK charts and decision matrix for action plan development. Research best practices and formats of actions
plans. Be able to identify items that must be in an action plan and items that cannot be in an action plan.
Tool: Action Plan – identify actions necessary to accomplish goal.
Research and develop an understanding of action plans to include what must be included in a action plan and what cannot
be included. Be able to identify various action plan formats.
My notes:
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Lean Six Sigma tools
Concept: Use proven best practices for continuous improvement.
Tool: Standard Work - agreed upon set of work procedures and best practices that document the interaction of people,
materials and machines.
Inconsistent process = inconsistent results; Consistent process = expected results.
Research and develop a deep understanding of standard work.
My notes:
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Lean Six Sigma tools (cont.)
Tool: 5S – organize the physical work place for process excellence.
Sort, straighten shine, standardize, sustain.
Research and learn about 5S, detailed definitions for each phase and actions taken during each phase of a 5S event. Know
about red tags and red square areas. Understand the concept of point of use (POU) and supermarkets.
My notes:
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Lean Six Sigma tools (cont.)
Tool: Visual Management – make the workplace visual using colors, shapes, lines, etc.
Two components: Visual display and visual control.
Research all aspects of visual management and be able to distinguish between display and control.
My notes:
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Lean Six Sigma tools (cont.)
Tool: Mistake Proofing (Poke-Yoke) – use a 100% inspection device to automatically detect errors so they are passed to
the next stage of the operation.
Research and understand Poke-Yoke devices, the method for implementing and expected benefits.
My notes:
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Lean Six Sigma tools (cont.)
Tool: Quick changeover (SMED) – reduce the amount of time a machine is off when making a change. Reduces urge to
run large batches and provides a competitive advantage.
Research and understand why quick changeover is commonly called SMED, understand the two types of steps performed
in a changeover sequence, and the expected benefits.
My notes:
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Lean Six Sigma tools (cont.)
Tool: Heijunka – level the work to reduce system strain and enable “pull” production.
Research Heijunka and load leveling methods.
Tool: cellular design – put people, materials and information in the same place.
Researched cellular designs and methods for creation.
My notes:
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Sustainment
Concept: Prevent regression and commit to continuous improvement.
Tool: Audits - To sustain improvements leadership and audits are necessary.
What specific measures can be included for sustainment controls? What if leadership appears not to focus on sustainment?
My notes:
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Sustainment (cont.)
Tool: Replication: repeat success for maximum impact across organization.
How can we replicate success given the Q x A = I? What challenges might we face? Can the parking lot be a source of
continuous improvement ideas? Research and understand the RACI matrix for communications?
My notes:
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The American Association for Lean Six Sigma Certification
Your road to success!
AALSSC
112 Water St., Suite 101
Henderson, NV 89015