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Six Sigma Demystified, Second Edition by Paul Keller

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chapter 7Improve Stage

After the types and sources of variation in the analyze stage are understood, the improve stage of the define, measure, analyze, improve, and control (DMAIC) problem-solving methodology can begin to define and implement changes necessary for process improvement.

Objectives

There are several issues to be completed within the improve stage of DMAIC:

• New process operating conditions are determined.

• Failure modes for the new process are investigated and addressed.

• Benefits associated with the proposed solution are estimated by the team and approved by the sponsor.

• Process improvement is implemented and verified.

The outcome of each of these steps may cause a reconsideration of the assumptions from prior steps, forcing ...

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