DMAIC is an acronym representing the stages one must go through as part of the Six Sigma methodology for refining a process. The acronym stands for: Define, Measure, Analyze, Improve, Control. A brief overview of each phase follows:

Define - phase in which one creates a team charter listing the problem statement, the definition of the process, your team members, voice of the customer, and CTQs (critical to quality).

Measure - phase in which you develop a data collection plan, collect data and perform a statistica analysis on your measurement system.

Analyze - phase in which you use statistical tools to identify the root cause of a defect.

Improve - phase in which a solution is developed to eliminate the root causes of defects.

Control - phase in which the modified process (as created in Improve) is monitored to ensure that it does indeed improve the process.

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