Which quality improvement cycle was developed by Walter A. Shewhart?

The quality improvement cycle developed by Walter A. Shewhart is known as the Plan-Do-Check-Act (PDCA) cycle. This model serves as a fundamental framework for continuous quality improvement and emphasizes systematic planning, execution, and evaluation.

In the context of PDCA, "Plan" involves identifying a goal or objective and the necessary steps to achieve it. "Do" refers to implementing the plan on a small scale. "Check" involves assessing the outcomes and comparing them against the expected results to identify variances or areas for improvement. Lastly, "Act" takes the lessons learned from the evaluation stage to refine the process or standardize successful strategies for broader application.

This cycle encourages iterative improvement and is widely used in various fields, including manufacturing, healthcare, and service sectors, promoting a culture of continuous quality enhancement. The simplicity and adaptability of the PDCA cycle contribute to its enduring relevance in total quality management practices.