When Little Objective Data Are Available, Find Root Causes and Effects with Interrelationship Digraphs and JMP ®

IDs provide a means of evaluating ways in which disparate ideas influence one another. IDs: (1) make it easy to spot leading factors that affect other factors; (2) blend Cause-and-Effect thinking from Ishikawa diagrams and the creative logic of brainstorming; and (3) respond to frequent complaints made about Cause-and-Effect diagrams: “What are the most important causes among many choices available?” and “How do they interact or connect to each other?”