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Six Sigma Explained

Picture of Claudio Gutierrez

Claudio Gutierrez

President & Founder — Valens Project Consulting


Six Sigma is a business methodology that aims to improve the quality of processes by identifying and eliminating defects. It is a data-driven, customer-focused approach that has been adopted by organizations worldwide to reduce costs, improve efficiency, and increase customer satisfaction.


The core of Six Sigma is the DMAIC (Define, Measure, Analyze, Improve, Control) process. This five-step process provides a structured framework for identifying and eliminating defects in any process.



The first step in the DMAIC process is to define the problem or opportunity that needs to be addressed. This involves clearly defining the scope of the project, identifying the key stakeholders, and establishing measurable goals.



Once the problem has been defined, the next step is to measure the current state of the process. This involves collecting data on the process, identifying the sources of defects, and quantifying the impact of these defects.



With the data in hand, the next step is to analyze the process to identify the root causes of the defects. This may involve using statistical tools, conducting interviews, and observing the process in action.



Once the root causes have been identified, the next step is to develop and implement solutions to eliminate them. This may involve redesigning the process, implementing new controls, or training employees.



The final step in the DMAIC process is to control the process to ensure that the improvements are sustained. This involves monitoring the process, tracking key metrics, and taking corrective action when necessary.


Six Sigma uses a variety of tools and techniques to support the DMAIC process. These tools and techniques include:


  • Statistical process control (SPC): SPC is a set of tools and techniques that are used to monitor and control the variation in a process.
  • Failure mode and effects analysis (FMEA): FMEA is a tool that is used to identify and prioritize potential risks in a process.
  • Design of experiments (DOE): DOE is a tool that is used to systematically test different factors in a process to determine their impact on the outcome.
  • Root cause analysis (RCA): RCA is a process of identifying the underlying causes of problems.


Six Sigma has been successfully applied to a wide range of industries and processes, including manufacturing, healthcare, finance, and government. It is a powerful tool for improving quality, reducing costs, and increasing customer satisfaction.


Here are some of the benefits of Six Sigma:

  • Reduced defects: Six Sigma can help to reduce the number of defects in a process by up to 99.99966%.
  • Improved efficiency: Six Sigma can help to improve the efficiency of a process by reducing waste and streamlining operations.
  • Increased customer satisfaction: Six Sigma can help to increase customer satisfaction by improving the quality of products and services.
  • Reduced costs: Six Sigma can help to reduce costs by eliminating waste and improving efficiency.
  • Improved employee morale: Six Sigma can help to improve employee morale by empowering employees to identify and solve problems.


Six Sigma can certainly help organizations achieve their goals and achieve success in the marketplace. No wonder it’s used by companies of all sizes all over the world. If you’d like to implement it in your organization, here are some free templates we offer you to get started. For more support, reach out for a conversation with us!


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