What are the seven tricks of qc?

The seven methods of quality control are:

1, QC old seven skills: characteristic factor analysis chart, Plato, look-up table, hierarchical method, scatter chart, histogram, control chart.

2. Seven new methods of quality control: chart method, system diagram method, KJ method, arrow diagram method, matrix diagram method, PAPC method and matrix data analysis method.

The new seven methods of quality control, also known as the new seven tools of quality control, are mainly used to solve some management problems in a more convenient way. Compared with the original "old" seven quality control methods, they are mainly used in middle and high-level management, while the old seven methods are mainly used in specific practical work.

Function of seven methods of quality control

The classic QC7 technology, also known as the old QC7 technology, focuses on statistical analysis, aiming at finding problems and improving them after they occur, while the new QC7 technology will be introduced separately in the future, focusing on the thinking and analysis process, mainly emphasizing prevention before problems occur. For half a century, B7 has played a great role in on-site quality management.

It is constantly developing and perfecting itself. In B 7, commonly called B7, the hierarchical method has been replaced by the flow chart. Basic quality management tools follow a certain logical order in application. Firstly, the process to be improved is described by flow chart, then the process data is collected by checklist, and then the data is analyzed by histogram scatter chart or control chart.