Definition
Six Sigma is a process improvement methodology based on data analysis and statistical methods. Its purpose is to reduce variation, errors and nonconformities.
Human Explanation
Six Sigma helps find the causes of problems and make decisions using data instead of assumptions. This makes processes more predictable and stable.
Why it Matters
Reducing variation improves quality and process consistency and reduces errors and customer complaints.
Conceptual Boundary
Six Sigma is not only about statistics. Data is a tool that supports decisions, not an objective by itself.
Practical Perspective
Six Sigma creates the greatest value when data analysis leads to real process improvements instead of only producing reports.