Document Center is acquired by Nimonik

Scope

1.1 This practice covers simple methods for calculating how many units to include in a random sample in order to estimate with a prescribed precision, a measure of quality for all the units of a lot of material, or produced by a process. This practice will clearly indicate the sample size required to estimate the average value of some property or the fraction of nonconforming items produced by a production process during the time interval covered by the random sample. If the process is not in a state of statistical control, the result will not have predictive value for immediate (future) production. The practice treats the common situation where the sampling units can be considered to exhibit a single (overall) source of variability; it does not treat multi-level sources of variability.

Keywords

calculating test values; empirical knowledge; sampling; size; statistical methods; ICS Number Code 03.120.30 (Application of statistical methods)

To find similar documents by ASTM Volume:

14.01 (Healthcare Informatics)

14.02 (General Test Methods; Forensic Psychophysiology; Forensic Sciences; Terminology; Conformity Assessment; Statistical Methods; Nanotechnology; Forensic Engineering; Manufacture of Pharmaceutical Products)

To find similar documents by classification:

03.120.30 (Application of statistical methods)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.