What is the focus of the Six Sigma methodology?

The Six Sigma methodology is primarily focused on reducing defects and variability in processes to improve overall quality. By employing statistical tools and techniques, Six Sigma aims to identify and eliminate the causes of errors and inefficiencies, thereby increasing process reliability and customer satisfaction. The methodology employs a structured framework, including the Define, Measure, Analyze, Improve, and Control (DMAIC) process, to systematically address quality issues and drive continuous improvement.

In contrast, the other choices do not align with the core principles of Six Sigma. For example, generating more output regardless of quality goes against the fundamental goal of Six Sigma, which is to enhance quality while optimizing productivity. Increasing the variety of products produced does not address the main aim of minimizing defects in existing processes. Similarly, maximizing the cost of production is not a focus of Six Sigma; rather, the methodology seeks to optimize costs by eliminating waste and inefficiencies, further supporting its goal of reducing variability and defects.