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ASTM E122:17 RLV

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Hinweis: Neuste Ausgabe: ASTM E122:17(2022)

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Zusammenfassung

This practice covers simple methods for calculating how many units to include in a random sample in order to estimate with a specified precision, a measure of quality for all the units of a lot of material or produced by a process. It also treats the common situation where the sampling units can be considered to exhibit a single source of variability; it does not treat multi-level sources of variability. This practice is intended for use in determining the sample size required to estimate, with specified precision, a measure of quality of a lot or process. It applies when quality is expressed as either the lot average for a given property, or as the lot fraction not conforming to prescribed standards. The level of a characteristic may often be taken as an indication of the quality of a material.

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  • Redline von ASTM
  • Ausgabedatum:
  • Edition: 17
  • Dokumenttyp: IS
  • Seiten
  • Herausgeber: ASTM
  • Lieferant: ASTM
  • ICS: 03.120.30

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