Chapter 22

Ishikawa Diagram (Fishbone)

Ishikawa diagram: Purpose

When you are trying to get to the root cause of a problem, Kaoru ­Ishikawa’s model is an extremely helpful tool in analyzing probable issues causing the problem. The model was developed for Toyota car manufacturer in the context of quality control. It provides a structured way of considering the elements of processes, which are used in production of the final product.

The model can also be applied when one is trying to design a product and wants to identify which aspects in production need to be considered to achieve the desired features or quality level.

Ishikawa Diagram: Structure and Description

In reality, this model (Figure 22.1) is a brainstorming tool, where ­different factors ...

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