six sigma
C1CEFR level
70/100Rarity: rare
TechnicalRegister
A data-driven methodology for reducing defects and variation to near-perfect quality levels.
Our six sigma project cut defect rates on the moulding line to under one in ten thousand.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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