Standard Practice for
Calculating Sample Size to Estimate, With a Specified
Tolerable Error, the Average for a Characteristic of a Lot or
This standard is issued under the fixed designation E 122; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
Click below to download Astm E 122 – 00 Pdf free
Click here to download Astm E 121 – 83 (Reapproved 1996) Pdf Free Download