Six Sigma Green Belt Body of Knowledge

Internationally Recognized, Open Source Six Sigma Standards

The below body of knowledge represent the minimum required standards set by the Management and Strategy Institute (MSI) for understanding of Six Sigma principles at the Green Belt level.  Elements do not necessarily need to be presented in the order shown below.  Trainers and organizations are encouraged to teach additional information above and beyond these standards at each level.
Body of Knowledge
  1. General Topics
    1. History and overview of Six Sigma
    2. y = f(x)
    3. Process Variances
    4. TQM and other competing quality process improvement methods
    5. Understanding and recognizing opportunities to use Six Sigma within an organization
    6. Managing and understanding Quality as seen by the customer
    7. Deciding when to start a Six Sigma project
    8. Organizational Roles and Responsibilities of project members

  2. General Topics 2
    1. DMADV (Design for Six Sigma) variation
    2. Critical to Quality (CTQ)
    3. Cost of Poor Quality (COPQ)

  3. DMAIC – Define
    1. Defining a project
    2. The project charter
    3. Developing the business case
    4. Developing the project team
    5. Voice of the Customer
    6. SIPOC
    7. Define Phase Review

  4. DMAIC – Measure
    1. Process Mapping
    2. Basic Six Sigma statistics
    3. Cause & Effect
    4. Basic data collection
    5. Variation
    6. FMEA & Gage R&R
    7. Measure phase review

  5. DMAIC – Analyze
    1. Charting Data (Run Chart, Pareto, Histogram)
    2. Root Cause Analysis
    3. Verify root causes
    4. Analyzing opportunities
    5. Analyze phase review

  6. DMAIC – Improve
    1. Brainstorming
    2. Improvement opportunities
    3. Plan for implementation
    4. Improve phase review

  7. DMAIC – Control
    1. Control plan
    2. Statistical Process Control Plan
    3. Final tollgate

Lean Six Sigma Green Belt Body of Knowledge
The following components are required for Lean Six Sigma Green Belt Certification.  This only applies if Lean methodology is being taught.

  1. Lean Components
    1. Basics of Lean
    2. Muda, Mura Muri
    3. Kanban
    4. Just-in-time
    5. Kaizen
    6. 5S
    7. Push vs Pull
    8. TIMWOOD
Body of Knowledge Area Breakdown:

History of Six Sigma
Should be able to define Six Sigma and have an understanding of the history of Six Sigma and why it is used in business today.

y = f(x)
Although Six Sigma talks a lot about statistical analysis and measurements and various other mathematical applications, at the core of the process is one simple equation.  Understand the basic function of y=f(x)

Process Variances
Should have a basic understanding of identifying where variances are occurring in a function.

TQM & others
Have an understanding of the other process improvement methodologies and how they differ from Six Sigma.

Recognizing opportunities
Understand Six Sigma philosophies and how to recognize opportunity.

Managing Quality
Understand how to frame quality into what is important to the customer.

Deciding to start a Six Sigma project
Understand the “how and why” regarding a company launching a quality improvement initiative like Six Sigma.

Organizational Roles and Responsibilities
Understand how team are formed and the role of each belt level within the Six Sigma project.

The DMAIC Method
Understand and define DMAIC.  Define, Measure, Analyze, Improve, Control.

Why is DMAIC used
Understand why the DMAIC process is utilized.

DMADV variation
Understand the basis of DMADV (Design for Six Sigma) when you do not have an existing system or process to improve upon.

Project Communication
Understand why continual communication is critical to the success of the project.

Supporting Delivery
Understand the critical role that a Yellow Belt, or “Subject Matter Expert” plays within the Six Sigma team.

Defining a process
Determine how to define a process.  Process owners, scope and boundaries.

Critical to Quality Characteristics
Understand Critical to Quality (CTQ) measures.

Cost of Poor Quality (COPQ)
The Cost of Poor Quality is the sum of internal and external failures.  Understand the cost of poor quality.

Six Sigma Metrics
Understand the Sigma level, RTY, DPU, DPMO, FPY.  Consequential metrics, Quality Metrics, Cost Metrics, Scheduling Metrics.

Estimating the Baseline
Understand the process to estimate the baseline.

The Define Stage
The Project Definition and scoping of goals and objectives.  How the process is defined in terms of stakeholders, and the functionalities of the process.

The Measure Phase
Getting more detail into the process, what metrics and measurements are involved as well as estimating the baseline of the current “as is” process.

Six Sigma Tools
Understand the different tools that may be useful throughout the many parts of the Six Sigma project.

The Analyze Phase
Understand the value stream proposition and analysis.  Determination of the factors that influence the process output.

The Improve Stage
Understand how the new process is defined, potential benefits examined and verification of the new process determined.

The Control Stage
Understand the standardization of new practice, verifying the impacts /savings, and how to document lessons learned.

Valuing Six Sigma
Understand the role, like activities of a Green Belt and how that differs from a Black Belt.  Understand the communication project tasks that a Green Belt will likely be asked to undertake.

Certifications aligned to this standard:

Six Sigma Green Belt Certification:


Lean Six Sigma Green Belt Certification:


All MSI Green Belt Subcategories:

  • Six Sigma Lean Green Belt in Healthcare (LGBH)™

  • Six Sigma Lean Green Belt in Gov (SSGBG)™

  • Six Sigma Green Belt in HR (GBHR)™

  • Six Sigma Lean Green Belt in IT (LGBIT)™

  • Six Sigma Lean Green Belt in Education (LGBE)™

Practice Tests: