PDCA Cycle


Definition: the PDCA Cycle or PDSA or the Deming Cycle is an iterative model for continuous improvement of the quality of processes and products. It consists of a logical sequence of four repetitive steps for continuous improvement and learning:
- PLAN - Plan ahead for change. Analyze and predict the results.
- DO - Execute the plan, taking small steps in controlled circumstances.
- CHECK (STUDY) - Study the results.
- ACT - Take action to standardize or improve the process.
In the 1920s Shewhart introduced the 3-step concept of Plan, Do and See, which was modified by Deming into 4 stages.
Similar to DMAIC in Six Sigma.



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