• ASTM E122-09e1

ASTM E122-09e1

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

ASTM International, 08/01/2011

Publisher: ASTM

File Format: PDF

$30.00$60.00


Published:01/08/2011

Pages:5

File Size:1 file , 160 KB

Note:This product is unavailable in Russia, Ukraine, Belarus

1.1 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. 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.

More ASTM standard pdf

ASTM B670-07(2018)

ASTM B670-07(2018)

Standard Specification for Precipitation-Hardening Nickel Alloy (UNS N07718) Plate, Sheet, and Strip for High-Temperature Service

$21.00 $42.00

ASTM D2658-18

ASTM D2658-18

Standard Test Method for Determining Dimensions of Fiberboard Boxes

$34.00 $68.00

ASTM D2992-18

ASTM D2992-18

Standard Practice for Obtaining Hydrostatic or Pressure Design Basis for "Fiberglass" (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe and Fittings

$34.00 $68.00

ASTM D8248-20

ASTM D8248-20

Standard Terminology for Smart Textiles

$22.00 $44.00