Meaning of the word "six sigma" in English

What does "six sigma" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

six sigma

US /sɪks ˈsɪɡ.mə/
UK /sɪks ˈsɪɡ.mə/
"six sigma" picture

Noun

1.

a set of techniques and tools for process improvement, first introduced by Motorola in 1986. It seeks to improve the quality of process outputs by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes. It uses a set of quality management methods, mainly empirical, statistical methods, and creates a special infrastructure of people within the organization who are experts in these methods.

Example:
Many companies implement Six Sigma to reduce errors and improve efficiency.
He is a certified Six Sigma Black Belt.
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