The Fishbone Diagram
What is the Fishbone Diagram? The fishbone diagram was developed in the 1940s by the Japanese Kaoru Ishikawa, who is considered the pioneer of quality management in Japan. The method is one of the seven basic quality tools (Q7). The Ishikawa or Fishbone diagram is used to visualize a problem solving process. It is primarily used to search for the cause of the problem. The diagram can be used in the context of a Six Sigma project at any stage of the project when the causes of existing problems need to be found and ideas for solutions evaluated. The goal …