Which method does a Black Belt primarily use in Six Sigma projects?

In Six Sigma projects, the primary method utilized by a Black Belt is DMAIC, which stands for Define, Measure, Analyze, Improve, and Control. This structured approach is designed to improve existing processes by addressing issues in a systematic way.

The Define phase focuses on identifying the problem and project goals. In the Measure phase, data is collected to understand the current performance level. The Analyze phase aims to identify root causes of defects or inefficiencies. Improvement activities are implemented during the Improve phase, and finally, the Control phase establishes measures to sustain the improvements over time.

By following this methodology, Black Belts can effectively drive process improvements and achieve significant quality enhancements. Other methods mentioned, such as Statistical Process Control (SPC), SWOT analysis, and Key Performance Indicators (KPI), play roles in quality management but do not encompass the comprehensive, step-by-step focus of DMAIC that is central to Six Sigma methodologies.