The DMAIC (Define-Measure-Analyze-Improve-Control) methodology is one of the cornerstones of a Six Sigma project. It provides a useful heuristic that can remind you how to structure your project when you apply Six Sigma. This is important for two reasons. First, by reminding you to DEFINE your project’s goals, its deliverables to external customers, its deliverables to internal customers, and most important – your definition of a defect – you establish the solid foundation for actually delivering process improvements that meet tangible goals. Second, DMAIC provides a common language for Six Sigma practitioners so that new teams can spend time solving problems instead of searching for their own standard operating procedures.
If you’re familiar with Deming’s PDCA (Plan-Do-Check-Act) cycle, DMAIC is essentially equivalent, but with a very important addition at the end:
- Planning = Defining
- Doing = Measuring
- Checking = Analyzing
- Acting = Improving
- (Sustaining/Continually Learning) = Controlling
There’s nothing magical about DMAIC – it’s just a helpful reminder to guide you as you structure a Six Sigma project. And remember that a Six Sigma project is hopefully not the end of the improvement – ideally, a process team will leave behind a new foundation for identifying more efficiencies in the future.