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The Analyze Phase is the third phase of the DMAIC process, and focuses on identifying the root cause (or causes) of a process problem.

The Analyze Phase requires data and knowledge gleaned from the previous Define and Measure phases of DMAIC. This phase focuses on analysis of the data and the process. In terms of the data focus, statistical analysis is a cornerstone of Analyze, ensuring that potential root causes are not only validated but significant enough to merit attention. Methods and tools used include Process Maps, Charts and Graphs, Hypothesis Testing, and Value-Added Analysis.

DMAIC Analyze Phase

For a better understanding of DMAIC and an overview of Lean Six Sigma, check out our Free Lean Six Sigma Yellow Belt Training, Green Belt Training or Lean Training.

Elisabeth Swan

Elisabeth is a Managing Partner at, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. For over 25 years, she's helped leading organizations like Amazon, Charles Schwab and Starwood Hotels & Resorts build problem-solving muscles with Lean Six Sigma to achieve their goals.