Editing Ishikawa diagram (section)

==Overview==
[[File:Ishikawa Fishbone Diagram.svg|alt=|left|thumb|Sample Ishikawa diagram shows the causes contributing to problem.]]
The ''defect'', or the problem to be solved,{{sfn | Project Management Institute | 2015 | loc=§2.4.4.2 Cause-and-Effect Diagrams | pp=20-24}} is shown as the fish's head, facing to the right, with the ''causes'' extending to the left as fishbones; the ribs branch off the backbone for major causes, with sub-branches for root-causes, to as many levels as required.<ref>{{cite book|title=Guide to Quality Control|url=https://archive.org/details/guidetoqualityco00ishi|url-access=registration|last=Ishikawa|first=Kaoru|publisher=Asian Productivity Organization|year=1976|isbn=92-833-1036-5}}</ref>

Ishikawa diagrams were popularized in the 1960s by [[Kaoru Ishikawa]],<ref>{{cite book |year=2001 |title=Infusion Therapy in Clinical Practice |first=Judy |last=Hankins |pages=42}}</ref> who pioneered quality management processes in the [[Kawasaki Heavy Industries|Kawasaki]] shipyards, and in the process became one of the founding fathers of modern management.

The basic concept was first used in the 1920s, and is considered one of the [[Seven Basic Tools of Quality|seven basic tools]] of [[quality control]].<ref>{{cite web|url=https://asq.org/quality-resources/seven-basic-quality-tools|title=Seven Basic Quality Tools|last=Tague|first=Nancy R.|year=2004|work=The Quality Toolbox|publisher=American Society for Quality|location=Milwaukee, Wisconsin|page=15|access-date=2010-02-05}}</ref> It is known as a fishbone diagram because of its shape, similar to the side view of a fish skeleton.

[[Mazda|Mazda Motors]] famously used an Ishikawa diagram in the development of the [[Mazda MX-5 Miata|Miata]] ([[Mazda MX-5|MX5]]) sports car.<ref>{{Cite book|title=Improving complex systems today : proceedings of the 18th ISPE International Conference on Concurrent Engineering|last1=Frey|first1=Daniel D.|last2=Fukuda, S.|first3=Georg|last3=Rock|date=2011|publisher=Springer-Verlag London|isbn=978-0857297990|oclc=769756418}}</ref>