Ishikawa Fishbone Diagram Types

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Types of Ishikawa (Fishbone) Diagrams

There are many ways to use the Ishikawa diagram. You can analyse root causes using the classic format, step-by-step format, or a custom format. An Ishikawa or fishbone diagram always contains:

• The head of the fish (problem statement)
• One or more major "bones" or causes
• A series of smaller "bones" coming off the main bones to show the "Five Whys" used to identify the cause-effects.

Process Ishikawa Diagram
Each step of the process is a major cause.

Custom IshikawaDiagram
Use the generic categories but adapt them to your process: service representative, service order, software systems, reference manuals, and access.

The final product might look like this:

The Ishikawa fishbone diagram template is just one of the tools included in the QI Macros for Excel SPC Software for Excel.

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