Fishbone diagram
Fishbone diagrams show the causes of a specific event.
Kate
MikeGoal
To analyze possible problems that can help make design decisions. This method allows to get a clear overview of causes and effects.
Attachments
Instructions
1. Prepare the six arms of the diagram on a whiteboard.
2. Define the problem clearly as a short statement in the head of the diagram.
3. Describe the causes of each bone and write them down at the end of each branch. Use the 4 Ms as categories: Machine, Man, Methods, Materials.
4. Minor causes are listed around the major causes.
5. Interpret the diagram once its finished.
NOTE
If there are branches that are too crowded, split them into different branches.
OUTPUT
A diagram showing causes and effects.
NEXT
Identify possibilities and opportunities for your design.
Background
Source: Digital Society School
REFERENCE:
ISHIKAWA, Kaoru; ISHIKAWA, Kaoru. Guide to quality control. Tokyo: Asian Productivity Organization, 1982.
DALE, Barrie G.; VAN DER WIELE, Ton; VAN IWAARDEN, Jos. Managing quality. John Wiley & Sons, 2007.
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