The seven tools of QC refer to seven effective tools for quality management and improvement, such as AHP, checklist, Plato, causality diagram, control diagram, scatter diagram and histogram.

The purpose of the seven QC tools:

The seven tools of QC are widely used in all aspects of enterprise management, including planning control, employee thought and behavior management, quality control, cost control, delivery control, morale management, environmental management, safety management, efficiency management, performance appraisal and daily management. But they are mainly used for quality management and improvement.

The use formula of seven QC tools:

Causality tracing, test set data, Bora focusing, linear distribution, scattered correlation, control to find anomalies, layer analysis.