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

Informace o normě:

Označení normy: ASTM E122-17(2022)
Datum vydání normy: 1.4.2022
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

Anotace textu normy ASTM E122-17(2022) :

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)