Which of the following is NOT a Lean tool?

The Fishbone Diagram, also known as the Ishikawa or cause-and-effect diagram, is primarily a quality management tool used for identifying and analyzing the root causes of problems. Although it is valuable in quality improvement initiatives, it is not specifically categorized as a Lean tool, which focuses on maximizing value by eliminating waste and improving processes.

In contrast, tools like 5S, Value Stream Mapping, and Kanban are directly associated with Lean principles. 5S promotes organization and efficiency in the workplace, Value Stream Mapping helps visualize and analyze the flow of materials and information to identify waste, and Kanban is a scheduling system that aids in inventory control and ensures efficient workflow. Understanding these distinctions is crucial in applying the appropriate methodologies effectively within Lean practices.