All listings within 400 km around Salem in Six Sigma

Six Sigma is a set of methodologies and tools aimed at improving business processes by identifying and eliminating defects, reducing variation, and ensuring quality control. The goal of Six Sigma is to achieve a level of process performance where the number of defects is reduced to a statistically insignificant level, typically aiming for no more than 3.4 defects per million opportunities (DPMO).