Fishbone Diagram Powerpoint Template and Keynote Presentation
Fishbone diagram were discovered by Kaoru Ishikawa in 1960 for quality management processes in the Kawasaki shipyards
The fishbone diagram is also called Cause–and–Effect Diagram. Diagram has beauty to be used for various purposes through little variations. It is being used in various formats like cause enumeration diagram, process fishbone, time–delay fishbone, CEDAC (cause–and–effect diagram with the addition of cards), desired–result fishbone, etc.
The fishbone diagram identified many possible causes problem and used to structure a brainstorming session to sort ideas into useful categories.
Fishbone diagrams are used in product design and quality defect prevention by identifying various causes for a problem and categorizing and sub-categorizing various reasons to identify a major source of variations.
The problem or effect is the list on the right-hand side as head of fish for which various root causes extend on the left-hand side as fishbone, where ribs branch off from the backbone as major causes and sub-branches as root causes extending to as many levels as required.
Fishbone diagram Procedure requires flipchart or whiteboard and marking pens as material. Broadly it is a 2 step process
1. Identify the problem and build consensus on the same. Write the problem on the right of the flipchart.
2. Brainstorm all possible causes and sub-causes of problem by involving the whole team till the time group runs out of ideas and categorizing causes
Different frameworks are used to structure the major category depending on the nature of the industry , for example, manufacturing, marketing or service.
The 5 Ms framework is used in manufacturing based on following five major categories
• Method /Process
• Man/mind power
• Measurement / medium
The 8 Ps Framework is used in product marketing based on following parameters
• Product (or service)
• Physical evidence
The 4 Ss framework is used in service industries
After all possible causes are listed categorically, we need to screen or prioritize causes based following two factors
1. How likely is this cause to be the major source of the issue or variation?
2. V- Very How easy would it be to fix or control?
• V- Very Easy
• S- Somewhat Easy
• N- Not Easy
Put the answers to the two questions together. Work on the Cause which has a result of VV, VS, and SV.
• S- Somewhat Likely
• N- Not Likely