Six Sigma Training
Six Sigma Training

About Six Sigma

How Does Six Sigma Work?

Six Sigma improvement projects follow a process defined by a system of smaller phases:

Define, Measure, Analyze, Improve, Control (DMAIC).

The Six Sigma DMAIC phases are described below:

Define Phase

The Define phase, determines whether or not the product or service will help meet the organisation’s business objectives/goals

In this phase we Define:

  • The Customer – who is the customer, what do they need / want? Defining customer needs involves looking at quality control issues and core business processes
  • Project boundaries – Where does this process begin and end?
  • The process to be improved

Measure Phase

Before we make any improvements we need to Measure the existing systems. During this phase of Six Sigma DMAIC we:

  • Develop a data collection plan for the process
  • Collect that data to identify types of metrics and defects
  • Compare customer survey results to the evidence

Analyse Phase

In this phase we Analyze the system and find ways to get rid of the gap between the current performance which we have measured and the desired objective. Project teams look at the underlying reasons for defects using statistical analysis to examine variables which affect the outcome and identify the most root causes (also known as Root Cause Analysis). To summarise, during the Six Sigma Analyse phase:

  • Current performance and goal performance are compared to identify gaps
  • Opportunities for improvement are prioritised
  • Sources of variation are identified

Improve Phase

During the Improvement phase, project teams find the optimal solution and develop a plan of action for implementing the solution. At this point the process is now modified according to the plan and the outcome is measured to ensure  the revised method produces results in line with customer expectations. This is achieved by:

  • Using discipline and technology to develop innovative solutions
  • Develop and implement plan

Control Phase

Once Six Sigma has improved the process, the Control phase ensures that it is continuously improved. This is to:

  • Prevent the instinct to return to the old ways of doing things
  • Develop, document and implement an ongoing monitoring plan
  • Integrate the improvements throughout the organisations through the use of training, staffing and incentives

Follow us


| More
  • Six Sigma Green Belt Certification

    Six Sigma Green Belt training provides attendees with a comprehensive working knowledge of the Six Sigma DMAIC (Define, Measure, Analyze, Improve and Control) model, enabling them to successfully deploy Six Sigma techniques and to lead Six Sigma improvement projects. Read more...
  • Six Sigma Black Belt Certification

    Six Sigma Black Belt training provides delegates with an in-depth knowledge of Six Sigma tools and principles (including supporting systems). A certified Black Belt will lead Six Sigma project teams across multiple Six Sigma projects throughout the organisation. Read more...