Are measurement decision risks under control if the TUR is sufficient (i.e., TUR ≥ 4)?

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Are measurement decision risks under control if the TUR is sufficient (i.e., TUR ≥ 4)?

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No. The in-tolerance probability of the UUT attribute is a major contributor to measurement decision risk. TUR does not take this probability into account and is, therefore, often an unreliable and misleading decision metric.

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