The PDCA cycle (also known as the Deming cycle or Shewhart cycle) consists of four steps:

Plan: Recognize an opportunity and plan a change.

Do: Test the change by carrying out a small-scale study.

Check: Review the test results, analyze data, and identify learnings.

Act: Take action based on what was learned. If the change didn’t work, revise the plan and repeat the cycle.

The “checking” step is crucial because it informs subsequent actions. It doesn’t necessarily produce corrective actions directly, but it guides decision-making. PDCA is a continuous improvement tool used in various contexts, including quality management, process improvement, and problem-solving1.

Remember that while PDCA is valuable, other improvement methodologies (such as Six Sigma, Lean, or Agile) may be more suitable for specific situations. The choice depends on the context, goals, and organizational needs12.

References:

The ASQ Certified Manager of Quality/Organizational Excellence Handbook, Fifth Edition. Sandra L. Furterer and Douglas C. Wood. ASQ Quality Press, 2021. Link

ASQ Certified Manager of Quality/Organizational Excellence (CMQ/OE) Body of Knowledge (BoK). ASQ. Link