Aktivní norma | Vydána: 01.04.2022

ASTM E122-17(2022)

Standard Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process

Dostupné jazyky: Anglicky

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Podrobné informace

Označení: ASTM E122-17(2022)

Datum vydání: 01.04.2022

Stran: 5

Země: Americká technická norma

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Anotace

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.

Keywords:
advance estimate, error analysis, pooled standard deviation, precision, sample size, sampling, sampling unit,, ICS Number Code 03.120.30 (Application of statistical methods)

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