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Fishbone Diagram PDF Print E-mail

Clement L. Rasul
© copyright 2009

If you intend to use any portion of this article in your training program, permission can be granted by writing the author. The illustration below of the fishbone diagram is based on an actual problem analysis work undertaken by the author. It has been abridged by the author for teaching purposes.

What is a Fishbone Diagram?

A Fishbone Diagram is a problem analysis tool that illustrates the cause and effect relationships of problems and is often use in the quality management discipline. The tool illustrates the problem statements using a line, and the relationships of problems is depicted on where the line is connected to another line. When referring to the cause and effect diagram in quality management, the discipline often refers to the fishbone diagram. As used in project management, the fishbone diagram is an alternative to the problem tree diagram or the streams analysis diagram.

The fishbone diagram is also known as the Ishikawa diagram. This is in recognition of Professor Kaoru Ishikawa, its original author, who popularize the tool in quality management.

Problem Analysis Using the Fishbone (Ishikawa) Diagram
A Health Sector Example