PDCA is a four step problem solving process. It is also known as the Deming cycle, Shewhart cycle or Deming wheel.The following are the explanation of each step:

1. P - Plan (Devise your Plan). Recognize an opportunity and plan a change.

2. D – Do (or Execute) the Plan. Implement change and Test the change. Carry out a small-scale study.  Testing fit in this stage.

3. C – Check (Check the Results). Review the test, analyze the results and identify what you’ve learned.

4. A - Act (Take the necessary action) Take action based on what results are found: If the change did not work, go through the cycle again with a different plan. If you were successful, incorporate what you learned from the test into wider changes. Use what you learned to plan new improvements, beginning the cycle again.


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