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7 basic quality management tools

Quality pros have many names for these seven basic tools of quality, first emphasized by  Kaoru Ishikawa,  a professor of engineering at To...

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."

  1. Cause-and-effect diagram (also called Ishikawa or fishbone chart): Identifies many possible causes for an effect or problem and sorts ideas into useful categories.
  2. Check sheet: A structured, prepared form for collecting and analyzing data; a generic tool that can be adapted for a wide variety of purposes.
  3. Control charts: Graphs used to study how a process changes over time.
  4. Histogram: The most commonly used graph for showing frequency distributions, or how often each different value in a set of data occurs.
  5. Pareto chart: Shows on a bar graph which factors are more significant.
  6. Scatter diagram: Graphs pairs of numerical data, one variable on each axis, to look for a relationship.
  7. Stratification: A technique that separates data gathered from a variety of sources so that patterns can be seen (some lists replace “stratification” with “flowchart” or “run chart”).

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