Used where there is a workplace problem with several issues, but where the cause-and-effect relationships are not clear. In this graphical method the issues are written in a circle. Cause and effect arrows are drawn between the issues. The issue with the most cause arrows leaving it is a primary cause of the problem. The interrelationship digraph is part of the lean toolkit (Seven New Tools of Quality 1976).
« Back to Glossary Index
« Back to Glossary Index