Calculation of the Share of Defects
Use
You can statistically estimate the share of nonconforming units for each characteristic. For this calculation, the original-value distribution category is taken into account.
The share of defects for a characteristic is used in some quality score procedures to calculate the quality score.
In the standard system, function modules are defined for calculating the defect share for the following statistical distributions of characteristic values:
This distribution category is used only for characteristics with at least one tolerance limit for which the measured values are confirmed.
This distribution category is used for qualitative characteristics for which the number of nonconforming units is confirmed.
This distribution category is used only for qualitative characteristics for which a confirmation of the number of defects is required.
Prerequisites
A parameter that describes the distribution model is used to estimate the share of defects for the inspection characteristic in the task list.
Features
If you execute the function, the system issues a message that the share estimation was carried out for the characteristic and a dialog box is displayed with the inspection characteristic overview. In this dialog box the share of defects is displayed in the Share field. If the characteristic has tolerance limits and original-value recording, the share of values above and/or below the tolerance range are displayed in the ShareAbove and/or ShareBelow fields.
When you valuate or close a characteristic, the share calculation is automatically carried out.
Activities
To access the share calculation function, choose Extras
® Statistics ® Calculate shares on the characteristic single screen.See also:
Recalculating the Quality Score
Valuating Inspection Characteristics
Closing Inspection Characteristics