Seven tools, old and new, were summed up by the Japanese. After the Japanese put forward the old seven pieces and succeeded, they put forward the new seven pieces in 1979. It is called "seven tools" because ancient Japanese samurai often carried seven weapons when they went out to fight, and the so-called seven tools were used by seven weapons.

Of course, there are more than seven useful quality statistics management tools. In addition to the old and new seven tools, the commonly used tools include experimental design, distribution diagram, transfer diagram and so on.

This time, we mainly talked about seven methods of QC, and SPC (Control Chart) is the core part of the seven methods of QC, and it is also the key content of this training.

Second, the old seven tools

The old seven skills of QC refer to checklist, analytic hierarchy process, Plato, causality diagram, scatter diagram, histogram and control diagram.

The old seven tools are our content this time, and they are also the management methods that we will vigorously promote. In a sense, the implementation of QC Seven Law shows the advanced level of company management to a certain extent. The success or failure of these methods will become an important aspect of the company's market upgrade: almost all OEM customers will regard the application of statistical technology as an important aspect of audit, such as TDI and Motorola.

Third, seven new tools.

The new seven methods of QC refer to chart method, KJ method, system diagram method, matrix diagram method, matrix data analysis method, PDPC method and network diagram method.

Relatively speaking, the promotion and application of the new seven technologies in the world is far less than that of the old seven technologies, and it has never become an important aspect of customer audit.