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1. METHODICAL INSTRUCTIONS TO A FISHBONE
DIAGRAM
The history
Talking briefly about the history, a professor at the University of Tokyo, Dr. Kaoru
Ishikawa, developed the first Fishbone diagram in 1943. The original objective of the
diagram was to sort out and depict the relationship among the several factors impacting
quality control, wherein the variables that cause dispersion, such as chemical
composition, the size of parts, or process workers, were called “factors”. We now call
“factors” “causes”.
1.How to Construct a Fishbone Diagram?
Let’s try to understand how to construct a Fishbone Diagram with a
series of process steps. Refer back to the example of the Fishbone
Diagram above as we explain the nine steps to constructing a Fishbone
Diagram:
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