Comparing current data to historical control limits leads to conclusions about whether the process variation is consistent (in control) or is unpredictable (out of control, affected by special causes of variation). Quality pros have many names for these seven basic tools of quality, first emphasized by Kaoru Ishikawa, a professor of engineering at Tokyo University and the father of "quality circles." Start your quality journey by mastering these tools, and you'll have a name for them too: indispensable.ĭiagram (also called Ishikawa or fishbone diagrams): Identifies many possible causes for an effect or problem and sorts ideas into useful categories.Ĭheck sheet: A structured, prepared form for collecting and analyzing data a generic tool that can be adapted for a wide variety of purposes.Ĭontrol chart: Graph used to study how a process changes over time. "The Old Seven." "The First Seven." "The Basic Seven." Quality Glossary Definition: Seven tools of quality
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