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Six Sigma Demystified, Second Edition by Paul Keller

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chapter 8Control Stage

The final stage of define, measure, analyze, improve, and control (DMAIC) problem-solving methodology is the control stage.

Objectives

There are several objectives to be completed within the control stage of DMAIC:

• The new methods must become standardized in practice.

• The predicted impact of the improvements, the project deliverables, must be continually verified, especially the financial return.

• Lessons learned should be documented.

Standardize on the New Methods

In the improve stage, changes are made to the process. Frequently, the process procedures will be changed. The old way of doing things is replaced with new and improved methods.

Process variation may have been reduced by controlling the variation in one ...

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