A. Identifying Specific Improvement Opportunities → II. Pareto Diagrams
Pareto diagrams help identify the “vital few” causes contributing to most problems (80/20 principle). This makes them ideal for pinpointing priority areas for improvement.
B. Analysing problems and their root causes → IV. Fish Bone Diagram
The Fishbone (Ishikawa or Cause-and-Effect) Diagram is specifically used for root cause analysis by categorizing possible causes of a problem.
C. Highlighting Problems → I. Control Charts
Control charts monitor process variation over time and highlight deviations from control limits, thereby signaling potential problems.
D. Operational Planning for building quality into products/services → III. Poka-Yoke
Poka-Yoke (mistake-proofing) is a preventive tool used to design processes so that errors are avoided at the operational stage itself.