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Fishbone Diagram - GoLeanSixSigma.com

What is a Fishbone Diagram?

A Fishbone Diagram is structured brainstorming tool designed to assist an improvement team in listing potential causes of a specific effect. It’s name derives from its resemblance to the bones of a fish. It is also known as an Ishikawa Diagram, for its creator.

Causes are often grouped into major categories, which are classically defined as the 6 Ms: Man/Mind Power (people), Methods (processes), Machines (technology), Materials (raw materials, information, consumables), Measurements (inspection), and Milieu/Mother Nature (environment). An additional 2 Ms are also sometimes used: Management/Money Power and Maintenance.

Fishbone Diagram (aka Cause & Effect Diagram) Template

 
 
 

To learn how to use the Fishbone Diagram and how to apply Lean or Six Sigma, check out our Free Lean Six Sigma Yellow Belt TrainingGreen Belt Training or Lean Training.

Elisabeth Swan

Elisabeth is a Managing Partner & Executive Advisor at GoLeanSixSigma.com. For over 25 years, she's helped leading organizations like Amazon, Charles Schwab and Starwood Hotels & Resorts build problem-solving muscles with Lean Six Sigma to achieve their goals.