The Seven Quality Tools

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The Seven Quality Tools - short version

Problem solving tools developed in Japan and North America over the past century. They include the run chart, Pareto chart, histogram, control chart, check sheet, and scatter diagram.

The Seven Quality Tools - long version

The discipline of Total Quality Control uses a number of quantitative methods and tools to identify problems and suggest avenues for continuous improvement in fields such as manufacturing.

Over many years, total quality practitioners gradually realized that a large number of quality related problems can be solved with seven basic quantitative tools, which then became known as the traditional "Seven Tools of Qualityā€¯. These are:

Ishikawa diagram
Pareto chart
Check sheet
Control chart
Scatter diagram

These tools have been widely used in most quality management organizations, and a number of extensions and improvements to them have been proposed and adopted.


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