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DPU - Defects Per Unit
DPU or Defects per unit is the average number of defects observed in a sample lot or batch. The defects per unit is a fundamental measurement used in six sigma. As shown above in the formula the measurement means that a process producing U (the total number of units) outputs, with D (total number of defects observed) then on average each unit will contain such number of defects per unit (D/U).
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