Sigma Levels

Sigma Levels are a way to measure how consistent and reliable a process is by assessing the number of defects or errors it produces. The "sigma" (σ) refers to standard deviations in statistics, which show how much variation exists in a process. Higher sigma levels indicate fewer errors, meaning the process is more precise and predictable. For example, a Six Sigma process (6σ) produces only about 3.4 defects per million opportunities, representing very high quality. Ultimately, Sigma Levels help organizations understand and improve their processes by aiming for fewer mistakes and greater consistency.