Six Sigma Green Belt Certification Practice Exam 2025 - Free Six Sigma Practice Questions and Study Guide

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What is another name for a fishbone diagram?

Ishikawa Diagram

The fishbone diagram is also known as the Ishikawa Diagram, named after its creator, Kaoru Ishikawa, who developed it in the 1960s as a tool for identifying and organizing potential causes of problems. This diagram is used primarily in quality management and is especially valuable in root cause analysis. It visually represents the various potential causes for a specific issue by categorizing them into different branches, making it easier for teams to brainstorm and identify the root causes of quality problems.

While the fishbone diagram can also be referred to as a Cause and Effect Diagram, the most widely recognized alternative term remains the Ishikawa Diagram. This connection to Kaoru Ishikawa underscores its historical importance and application in Six Sigma methodologies. The other terms mentioned do not accurately describe the fishbone diagram; they refer to different tools used in quality management and process improvement.

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Scatter Diagram

Process Flow Diagram

Causes and Effect Diagram

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