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Table 4

Probability of incorrect inspections − MSA criteria.

Cpk Decentralization of manufacturing process (μm) σmpp (μm) Bias (μm) %GRR σmp (μm) False alarm Error
0.67 0 5 0 10 0.3333 0.0031 0.0026
1.00 3.3333 0.0004 0.0003
1.33 2.5 0 0
1.67 2 0 0
0.67 3.3333 3.3333 0.0024 0.0019
1.00 2.5 2.5 0.0003 0.0002
1.33 2 2 0 0
1.67 1.6667 1.6667 0 0
0.67 0 5 0 30 1 0.0106 0.0063
1.00 3.3333 0.0015 0.0004
1.33 2.5 0 0
1.67 2 0 0
0.67 3.3333 3.3333 0.0086 0.0038
1.00 2.5 2.5 0.0010 0.0002
1.33 2 2 0 0
1.67 1.6667 1.6667 0 0

False alarm: an item rejected as non-conforming may actually be conforming and Error: an item accepted as conforming may actually be non-conforming.

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