Seven methods of quality management

Seven methods of quality management mainly refer to the quality management tools commonly used in enterprise quality management.

There are "old seven kinds" and "new seven kinds". The old seven kinds include hierarchy method, questionnaire method, arrangement method, cause-effect diagram, histogram, control diagram and correlation diagram, while the new seven QC tools are system diagram, correlation diagram, affinity diagram, matrix diagram, arrow diagram, PDPC method and matrix data analysis method.

QC is widely used in all aspects of enterprise management (including planning control, employee ideological and behavioral management, quality control, cost control, delivery control, morale management, environmental management, safety management, efficiency management, performance appraisal, daily management, etc.). ), but mainly used for quality management and improvement.

These seven skills are: tracing the cause and effect, checking the data set, paying attention to Bora, displaying the distribution in the straight line direction, finding the correlation in dispersion, controlling and discovering anomalies, and analyzing layers.

usage mode

Affinity graph-extracting information from messy language data; Correlation diagram-clarify the relationship between complex factors; System diagram-systematically seek the means to achieve the goal; Matrix diagram-multi-angle investigation of existing problems, variable relationship; PDPC- Predict possible obstacles and results in design; Arrow diagram-make a reasonable progress plan; Matrix data analysis-multivariate transformation and multivariate data analysis.