ASTM E2334-09(2023)

Detailinformationen

Bezeichnung: ASTM E2334-09(2023)

Ausgabedatum: 01.01.2023

Seiten: 10

Land: Amerikanische technische Norm

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Annotation

This practice presents methodology for the setting of an upper confidence bound regarding an unknown fraction or quantity non-conforming, or a rate of occurrence for nonconformities, in cases where the method of attributes is used and there is a zero response in a sample. Three cases are considered. In Case 1, the sample is selected from a process or a very large population of interest. In Case 2, a sample of n items is selected at random from a finite lot of N items. In Case 3, there is a process, but the output is a continuum, such as area (for example, a roll of paper or other material, a field of crop), volume (for example, a volume of liquid or gas), or time (for example, hours, days, quarterly, etc.) The sample size is defined as that portion of the ?continuum? sampled, and the defined attribute may occur any number of times over the sampled portion.


Keywords:
attribute, confidence coefficient, defect, defective, non-conforming item, non-conformity, zero response,, ICS Number Code 03.120.30 (Application of statistical methods)