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Here is a cause and effect diagram example.

Created by Kaoru Ishikawa, a Japanese QA professional, who use this method to help his employees to avoid solutions that merely address the symptoms of a much larger problem. Ishikawa diagram, also called a cause and effect diagram or fishbone diagram, is a presentation and brainstorming tool for categorizing the potential causes of a problem in order to identify its root causes. Here we give an example on how the Fishbone Diagram is used in a real life problem.