Cause and Effect , Fishbone, Ishikawa Diagram

Prepared by

Komal Dhantole Sharayu Jadhav Janhavi Khatavkar Prachi Ghadi Pratiksha Pandya Praneit Khot Mandar Jadhav

Cause and Effect , Fishbone, Ishikawa Diagram

Total Quality Management (TQM) is a management strategy created to achieve excellence in quality in all organizational processes. TQM has been widely used in manufacturing, education, government, and service industries, as well as NASA space and science programs.

Cause and Effect , Fishbone, Ishikawa Diagram

The creator was Kaoru Ishikawa, who pioneered quality management processes in the Kawasaki shipyards, and in the process became one of the founding fathers of modern management.

It is simply a diagram that shows the causes of a certain event.

It was first used in the 1960s.

Cause and Effect , Fishbone, Ishikawa Diagram

This is a useful tool to identify the causes of a problem. It’s called Fishbone because of the resemble of the diagram with a fishbone, where the identified causes converge to a main branch, that leads to the result, or effect, which is the problem to solve. The 6 Ms (used in manufacturing industry) The 7 Ps (used in marketing industry) The 5 Ss (used in service industry)

Cause and Effect , Fishbone, Ishikawa Diagram

To complete an Ishikawa fishbone diagram or cause and effect diagram:

Put the problem statement in the head of the fish and the major causes at the end of the major bones. Major causes include: – Processes, machines, materials, measurement, people,

environment – Steps of a process (step 1, step 2, etc.). – Whatever makes sense

Begin with the most likely main cause. For each cause, ask "Why?" up to five times.

Cause and Effect , Fishbone, Ishikawa Diagram

This tool is specially efficient for capturing team brainstorming output and for attacking a problem from the “wide picture”. A fishbone diagram can become very complex, as the one shown in the next sheet.

A fish bone diagram can become very complex:

Advantages of Fishbone diagram

Different opinions by teamwork Easy to apply Little effort to practise Better understanding for causes and effects

Disadvantages of Fishbone Diagram

No clarity in very complex problems Interactions and chronological dependence

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