FISHBONE DIAGRAM
Ishikawa cause and effect
This cause analysis tool is considered
one of the seven basic quality tools.
Ir. Sugeng Endarsiwi

Dr. Kaoru Ishikawa, a
Japanese quality control
expert, is credited with
inventing the fishbone diagram
to help employees avoid
solutions that merely address
the symptoms of a much larger
problem.
Fishbone diagrams are
considered one of seven basic
quality tools and are used in
the "analyze" phase of Six
Sigma's DMAIC (define,
measure, analyze, improve,
control) approach to problem-
solving.

1
When to use a
fishbone
diagram
2
A few reasons
a team might
want to
consider using
a fishbone
diagram are:
3
To identify the
possible
causes of a
problem.
4
To help
develop a
product that
addresses
issues within
current market
offerings.
5
To reveal
bottlenecks or
areas of
weakness in a
business
process.
6
To avoid
reoccurring
issues or
employee
burnout.
7
To ensure that
any corrective
actions put into
place will
resolve the
issue.
8
A cause and
effect diagram,
often called a
“fishbone”
diagram,
can help in
brainstorming
to identify
possible
causes of a
problem and
in sorting
ideas into
useful
categories. A
fishbone
diagram is a
visual way to
look at cause
and effect.