An Ishikawa diagram or fishbone diagram is a tool for visualizing the potential causes of a problem or effect. It was developed by Kaoru Ishikawa and displays causes branching out from a main problem like the bones of a fish. An Ishikawa diagram maps out the various factors that contribute to an overall problem or effect. It helps identify potential areas of improvement by breaking down the root causes and contributors.

1. Can you explain the concept of fish
bone/ Ishikawa diagram?
There are situations where we need to analyze what caused a
failure or problem in a project. Fish bone or Ishikawa diagram
is one of the important concept which can help you list down
your root cause of the problem. Fish bone was conceptualized
by Ishikawa, so in the honor of its inventor this concept was
named as Ishikawa diagram. Inputs to conduct a fish bone
diagram comes from a discussion and brain storming with
people who were involved in the project. The below figures
show how the structure of the Ishikawa diagram is. Below are
a few sample fish bone diagrams. The main bone is the
problem which we need to address and to know what caused
the failure. 1

2. With the help of few pictures, this
concept has been explained. It is
not my creation. However, I have
done little effort to collect these
pictures from internet. I do not
have any copy right on these pics.
2

3. 3
This can
apply to
any exam
like Six
Sigma.

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