What-If and Scope

What-If Defects

A lower-defect what-if recomputes the exact DPO and DPMO values.

highlighted = computed this step

What-If Defects

The what-if defect count is 5.

what-if defects=5\text{what-if defects}=5
DPMO snapshotThe same chart shows the base snapshot and the lower-defect what-if.what-if DPMO snapshotDPO 1/50; DPMO 20000measurevaluemeaningunits100checked unitsopportunities per unit4defect chances per unittotal opportunities400units times opportunitiesdefects8observed defectsDPO1/50defects per opportunityDPMO20000DPO times one millionbase defectsbase defects 8what-if defectswhat-if defects 5base DPMObase DPMO 20000what-if DPMOwhat-if DPMO 12500what-if DPO 1/80; DPMO 12500; reduction 7500

Recompute Metrics

The what-if DPO is 1/80 and DPMO is 12500.

recompute DPO and DPMO\text{recompute DPO and DPMO}
What-if defectsThe what-if recomputes DPO and DPMO from fewer defects.what-if defect-rate metricsvaluedefects5DPO1/80DPMO12500DPMO reduction7500

DPMO Reduction

The DPMO reduction is 7500.

base DPMO−what-if DPMO=7500\text{base DPMO}-\text{what-if DPMO}=7500
DPMO snapshotThe same chart shows the base snapshot and the lower-defect what-if.what-if DPMO snapshotDPO 1/50; DPMO 20000measurevaluemeaningunits100checked unitsopportunities per unit4defect chances per unittotal opportunities400units times opportunitiesdefects8observed defectsDPO1/50defects per opportunityDPMO20000DPO times one millionbase defectsbase defects 8what-if defectswhat-if defects 5base DPMObase DPMO 20000what-if DPMOwhat-if DPMO 12500what-if DPO 1/80; DPMO 12500; reduction 7500