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Six Sigma is a statistics-based methodology developed for quality control and process improvement. This approach aims to increase customer satisfaction and operational efficiency by reducing variability and eliminating defects in processes. Developed by Motorola in the 1980s, Six Sigma was later adopted by large companies such as General Electric and became a widespread industry standard. The system is based on a statistical process aiming to reduce defects to a level of 3.4 per million opportun