Six Sigma Overview

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What Is Six Sigma? Six Sigma is a project based problem solving approach that focuses on reducing/preventing defects resulting in increased customer satisfaction and lower costs. Key components are:
1. Project Selection
2. People
3. Disciplined project methodology

  • DMAIC- Problem solving
  • DMADI- Product design and Prevention

4. Data analysis and collection tools.

1. Project Selection

Attributes of a good Six Sigma project:

* Strong tie to business deliverables
* Enhances customer satisfaction and loyalty
* Strategic importance
* Impact on profit (hard and soft benefits)
* Results are visible or easily link to a key executive metric
* Meaningful results within 6 months (DMAIC only)
*Goals can be quantified and measured
* Project is feasible
* Team can commit time to project
*Potential solutions are relatively low cost

2. Six Sigma People
* Executive sponsorship
* Clear link between project and critical business goal
* Executive is visible and supportive of team efforts
* Executive breaks down barriers to improvement
* Dedicated project manager
* Black Belt for large or difficult projects, or projects that require statistical analysis
* Green Belt for a smaller project within her/his team
* Virtual team
*Represents the people directly impacted by the problem and will be involved in the improvements
* Cross-discipline and cross-group as needed
* Data driven decisions greatly enhance cross-group work

3. Six Sigma Project Methodology - Design for Six Sigma Methodology: Six Sigma Toolbox

Green Belt tools

? Benchmarking
? Brainstorming
? Cause- Effect diagrams
? Critical to Customer Tree
? Data Collection Plan
? FMEA( Failure modes and effect)
? Improvement strategy
? Interviews/ Precision questioning
? Prioritization matrices
? Project Charter
? Project plan template
? SIPOC- Process flow
? Surveys
? Workflow mapping

Black Belt tools

? Activity analysis
? Affinity diagram
? Data Presentation
? Histogram
? Box Plot
? Line Graphs
? Run Charts
? Control Charts
? Pareto Chart
? Bar Graphs
? Stacked Bar Graphs
? Pie Charts
? Design of experiments
? Full factorial
? Reduced fractions
? Screening designs
? Hypothesis tests
? t- test
? Paired t-test
? Chi Square
? Process sigma
? Kano modeling
? Quality Functional Deployment(QFD)
? Regression
? Rolled throughput and final yield
? Sampling
? Stratification

Project Best Practices

* Projects impact the business scorecard, key initiative, lowlights
* Executive sponsor status updates at the end of each project phase
* Weekly updates with Business Process owner and team
* Dedicated resources (Black/Greenbelts) to manage the project

* Detailed project plans developed and communicated to team and sponsors


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Information about Lean Six Sigma You may find at: