Equivalence of Lean and Six Sigma Approach
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| PDCA | DMAIC |
| PLAN Plan an organizational change or a product, service, problem solution, or process improvement. | DEFINE * Define the problem |
| MEASURE * Select CTQ characteristics. * Define performance standards. * Validate measurement system. | |
| ANALYZE * Establish product capability. * Define performance objective. * Identify variation sources. | |
| DO Do the activity planned, conduct an experiment, or pilot the organizational change. | IMPLEMENT * Screen potential causes. * Discover variable relationship. * Establish operational tolerance. |
| CHECK Check the results or effects of the change; study the quantitative and qualitative data collected on the effects of the change. | CONTROL * Validate measurement system. * Determine process capabilities. * Implement process control. |
| ACT Act on lessons learned. Make decision on large-scale production or implementation, abandonment, or activity, or repeating the PDCA cycle steps for continued improvement. |
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Source: [JACK06, S.xvii]