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Six Sigma. Jason Cumins. What is Six Sigma? History of Six Sigma Six Sigma Methodologies The roles of Six Sigma Six Sigma and CMMI Benefits and Issues of Six Sigma. Overview. A quality improvement approach to ANY company’s product/process Data driven approach for eliminating defects

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Six Sigma

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Six Sigma

Jason Cumins

  • What is Six Sigma?

  • History of Six Sigma

  • Six Sigma Methodologies

  • The roles of Six Sigma

  • Six Sigma and CMMI

  • Benefits and Issues of Six Sigma


  • A quality improvement approach to ANY company’s product/process

  • Data driven approach for eliminating defects

  • Six standard deviations between the mean and the nearest specification limit

What is Six Sigma?

  • Six Sigma means the process produces 3.4 defects per one million opportunities

What does Six Sigma do?

  • Motorola 1985

  • GE 1995

  • Extremely popular now

History of Six Sigma

Roles of Six Sigma

  • Green Belt

  • Black Belt

  • Master Black Belt

  • Champion

  • Sponsor

Roles of Six Sigma

  • Lowest level of the Six Sigma team other than team members

  • Lower level management

  • A few weeks of in class training

  • In charge of small projects or part of a Black Belts project

Green Belts

  • Next level of the Six Sigma team

  • Takes on large and difficult projects

  • At least a months worth of in class training

  • Helps guide Green Belts

  • Officially certified

Black Belts

  • Must be certified

  • Able to train and coach others

  • Generally has a lot of experience

Master Black Belts

  • Senior level executives

  • Solves issues between Black Belts and sponsors

  • Must have a high-level understanding of Six Sigma

  • Actively leads company to fully implement Six Sigma


  • Similar to champions

  • Sponsor overall six sigma initiative

  • Generally high-level executive


  • Two main methodologies


  • DMADV or DFSS(“Designs for Six Sigma”)

Six Sigma Methodologies

  • Used for improving existing process

  • Generally easier projects

  • Uses Green Belts


  • Define

  • Measure

  • Analyze

  • Improve

  • Control


  • “Critical to Quality” areas

  • Processes that are involved

  • Scope

  • Form a team

  • Create a project charter

  • Determine requirements


Define Tool (SIPOC)

  • Collect data on current processes

  • Understand why defects are created

  • Make sure data is valid


  • Identify ways to improve the process

  • Find the root of poor sigma performance

  • Identify sources of variation

  • Decide on which areas need to be improved on


  • Propose a large number of solutions

  • Create tests and evaluate solutions

  • Create an implementation plan


  • Implement the plan determined from the last phase

  • Focus on maintaining the six sigma performance

  • Train staff in the new process


  • Also known as Design for Six Sigma(DFSS)

  • Similar to DMAIC

  • Create an entirely new process

  • Extremely challenging

  • Uses Master or Regular Black Belts


  • First three phases are the same as DMAIC

  • Define the project

  • Measure the expectations

  • Analyze the data and figure out alternative solutions

Define, Measure, Analyze

  • Implement solutions and create a prototype

  • Necessity that critical to quality factors are accounted for

  • Carry out detailed design


  • Make sure Design phase fits all requirements

  • Critical to quality areas have great performance


  • It is not a competitor to CMMI

  • Use Six Sigma with CMMI can help improve Maturity levels

Six Sigma and CMMI

  • Process improvement for software development

  • Defined by its maturity levels: Initial, Repeatable, Defined, Quantitatively Managed, and Optimizing

Capability Maturity Model Integration (CMMI) Overview

  • Quantitative Process Management and Casual Analysis & Resolution

Direct Correlations with CMMI

  • Start using CMMI to create processes based off the community

  • Implement Six Sigma to optimize

  • Six Sigma reinforces mission focus and extremely supportive of CMMI implementation

Integration with CMMI

  • Average Black Belt saves the company $230,000

  • Positive results for Motorola, General Electric(GE), and Allied Signal/Honeywell

  • Extremely efficient production process

  • Rapid process improvement methodologies

Benefits of Six Sigma

  • If not fully committed it just doesn’t work

  • Requires a large amount of training

  • Managers must be active and have the ability to lead complicated projects

Issues with Six Sigma

  • Minitab 16

    • Minitab 16 Video



  • Ideal Meadia LLC. i Six Sigma. Retrieved 3/08/2012. <>

  • Siviy, Jeannine; Penn, M. Lynn; Harper, Erin. “Relationships Between CMMI and Six Sigma”. Software Engineering Institute 2005. Retrieved 3/08/2012. <>

  • Franza, Richard; Chakravorty, Satya. “Design for Six Sigma(DFSS): A Case Study”. Kennesaw State University, Dept. of Management and Entrepreneurship 2007. Retrieved 3/10/2012.


  • Catherwood, Philip. “Champions of the cause”. Waterton Technol. Centre, UK 2005. Retrieved 3/12/2012.

  • Pan, Zhedan; Baik, Jongmoon. “A Six Sigma Framework for Software Process Improvements and its Implementation”. Asia-Pacific Software Engineering Conference. Retrieved 3/12/2012.

  • AvetaBusiness Institute. Six Sigma Online. Retrieved 3/14/2012. <>


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