Põhjustamisediagramm

Põhjustamisediagramm, known in English as a cause-and-effect diagram or Ishikawa diagram, is a visualization tool used to identify, explore, and display the potential causes of a specific problem or effect. It is named after its creator, Kaoru Ishikawa, a Japanese quality control expert. The diagram's structure resembles a fishbone, hence its common alternative name, the fishbone diagram.

The main "spine" of the diagram represents the problem or effect, which is typically written at the head of the fish. The major "bones" branching off the spine represent the main categories of potential causes. Common categories in manufacturing include machine, method, material, man (people), measurement, and environment. In service industries, categories might include people, policies, procedures, plant (facilities), and suppliers.

Smaller "bones" then branch off from the main categories, detailing specific potential causes within each category. This hierarchical structure allows for a systematic and thorough exploration of all contributing factors. The process of creating a põhjustamisediagramm often involves brainstorming sessions with a team, ensuring a wide range of perspectives are considered. It is a valuable tool for problem-solving, quality improvement, and root cause analysis in various fields.