DMAIC

Define-Measure-Analyze-Improve-Control is a formal problem-solving process, and a major tool of Lean Six Sigma, based on formula Y= f(X), metric that measures the problem.

Define


First step is to identify a problem. Lean six sigma approach is to utilize Y=f(X), function defines one variable in terms of another. The statement “y is a function of x” (denoted y = y(x)) means that y varies according to whatever value x takes on.

Example: Quality=f(Process control, Raw material, Equipment etc.)

  • Cost of Poor Quality
  • Critical To matrix
  • Pareto Chart
  • SIPOC
  • Voice of the customer
  • KANO Analysis
  • Survey Design

Measure


Capture data on the Y metric (if not already available in Define) and also “Potential X’s” that we believe could impact the Y.

  • SIPOC
  • Stakeholder analysis
  • Spaghetti chart
  • Check Sheet
  • SS Analysis
  • Process Capability Analysis

Analyze


Through you process, graphical and statistical analysis identify the “Critical X’s” (or Root Causes) that truly impact the Y.

Improve


Identify and test solutions to the Critical X. Rollout out solutions that eliminate the Root Cause

Control


Sustain the improvement by standardizing new process and monitoring Critical X’s & Y

 

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