Six Sigma Methodology

In the Six Sigma methododology we can distinguish two models: DMAIC and DMADV.

  1. DMAIC concentrates on projects which purpose is to improve current business processes.
  2. DMADV concentrates on projects which aim is to create and design new products or processes.

In each methodology we can find five phases. In DMAIC they are called:

  1. Define (important objectives of the project and present processes)
  2. Measure (main features of the existing process and gather necessary information)
  3. Analyze (structure and relationship between reasons and results to assure that all elements and parameters have been taken into consideration)
  4. Improve (the current processes to achieve satisfying results)
  5. Control (to be sure that the deviations have been corrected before the defects occur).

In DMADV methodology the phases divided into:

  1. Define (objectives that meet the cunsomer needs)
  2. Measure (identify the possibility of production and risks with the product implementation)
  3. Analyze (information to choose the best alternative)
  4. Design (optimize the plan and verify it)
  5. Verify (start pilot enterprises and the manufacture processes).

DMADV could be also known as DFSS, shortening meaning of Design For Six Sigma.