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Lean Sigma: A Practitioner’s Guide, Second Edition by Ian Wedgwood Ph.D.

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2. Process Improvement Projects (DMAIC)

Overview1

1. Before reading this chapter, it is important to read and understand Chapter 1, “Introduction,” particularly the section “How to Use This Book.”

In process improvement projects the current process is deficient in some way, and therefore a change is required (this requires more than just the process to be standardized). However, that change isn’t obvious or unanimously agreed upon by all the key stakeholders, and therefore some data and analytics will likely be necessary. This type of project follows the ubiquitous DMAIC roadmap, as shown in Figure 1.1.

Define

During Define, the primary objectives are to understand whether this is the right project and the best project to do right now. If ...

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