How is six sigma defined ssd?

Six Sigma is a data-driven methodology aimed at improving business processes by reducing defects and variability. It utilizes statistical tools and techniques to identify and eliminate the causes of errors, striving for near-perfection in quality. The term "Six Sigma" refers to a statistical measure that indicates that a process is operating at a level where only 3.4 defects occur per million opportunities. This approach emphasizes continuous improvement and customer satisfaction.