Root Cause Analysis using Fish
Borne Diagram
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Did you know?
·
It is referred as "fish bone"
diagrams because a completed diagram can
look like the skeleton of a fish, with the "ribs" representing the causes of an event
and the final outcome appearing at the head of the skeleton.
· "Fish
bone" diagrams also known as Cause–and–Effect
Diagram, Ishikawa Diagram
·
The Ishikawa diagram was developed by Kaoru
Ishikawa during the 1960s as a way of measuring quality control processes in
the ship building industry.
·
It is used as risk assessment tool as well.
·
The
Fishbone diagram cannot solve anything. It is
simply an information gathering and managing tool that can be used
to help identify potential causes of a certain problems or event.
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The purpose of the Ishikawa diagram is to allow
management to determine which issues have to be addressed in order to gain or
avoid a particular event.
How to create a fish diagram:
·Create a head, which lists the problem or issue to be
studied.
·Create a backbone for the fish (straight line which leads
to the head).
·Identify at least four “causes” that contribute to the
problem. Connect these four causes with arrows to the spine. These will create
the first bones of the fish.
·Brainstorm around each “cause” to document those things
that contributed to the cause.
·Continue breaking down each cause until the root causes
have been identified.
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