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Literature and Composition: Reading, Writing,Thinking1st EditionCarol Jago, Lawrence Scanlon, Renee H. Shea, Robin Dissin Aufses 1,697 solutions Quality Glossary Definition: Fishbone diagram Also called: cause-and-effect diagram, Ishikawa diagram Variations: cause enumeration diagram, process fishbone, time-delay fishbone, CEDAC (cause-and-effect diagram with the addition of cards), desired-result fishbone, reverse fishbone diagram This cause analysis tool is considered one of the seven basic quality tools. The fishbone diagram identifies many possible causes for an effect or problem. It can be used to structure a brainstorming session. It immediately sorts ideas into useful categories.
When to Use a Fishbone Diagram
Fishbone Diagram ProcedureFishbone Diagram Example Materials needed: marking pens and flipchart or whiteboard.
Fishbone Diagram ExampleThis fishbone diagram was drawn by a manufacturing team to try to understand the source of periodic iron contamination. The team used the six generic headings to prompt ideas. Layers of branches show thorough thinking about the causes of the problem. Fishbone Diagram Example For example, under the heading "Machines," the idea "materials of construction" shows four kinds of equipment and then several specific machine numbers. Note that some ideas appear in two different places. "Calibration" shows up under "Methods" as a factor in the analytical procedure, and also under "Measurement" as a cause of lab error. "Iron tools" can be considered a "Methods" problem when taking samples or a "Manpower" problem with maintenance personnel. Create a Fishbone DiagramStart using the fishbone diagram template and analyze process dispersion with this simple, visual tool. The resulting diagram illustrates the main causes and subcauses leading to an effect (symptom). Fishbone Diagram ResourcesYou can also search articles, case studies, and publications for fishbone diagram resources. BooksBusiness Process Improvement Toolbox, Second Edition The Quality Toolbox, Second Edition ArticlesQuality Nugget: Creating Ishikawa (Fishbone) Diagrams With R (Software Quality Professional) A fishbone diagram connects causal links in major categories with an outcome, or effect. This article explains how to make one with the Six Sigma package in R. Fish(bone) Stories (Quality Progress) The method behind the fishbone diagram is older than many of its users. The authors explore how digitizing one of the seven basic quality tools—the fishbone diagram—using mind mapping can significantly improve the tool. CoursesASQ Quality Tools - Fishbone Diagram Continuous Improvement Techniques Introduction to Lean Principles Lean Comprehensive QTools™ Suite Videos
Excerpted from The Quality Toolbox, Second Edition, ASQ Quality Press. |