{"id":32741,"date":"2024-10-17T04:01:52","date_gmt":"2024-10-17T04:01:52","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-e122-4\/"},"modified":"2024-10-24T14:34:32","modified_gmt":"2024-10-24T14:34:32","slug":"astm-e122-4","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-e122-4\/","title":{"rendered":"ASTM-E122"},"content":{"rendered":"<\/p>\n

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.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology <\/td>\n<\/tr>\n
2<\/td>\nSignificance and Use
Empirical Knowledge Needed
Precision Desired
Equations for Calculating Sample Size <\/td>\n<\/tr>\n
3<\/td>\nReduction of Empirical Knowledge to a Numerical Value of
(Data for Previous Samples Available)
TABLE 1 <\/td>\n<\/tr>\n
4<\/td>\nReduction of Empirical Knowledge to a Numerical Value for
(No Data from Previous Samples of the Same or Like Material Available)
FIG. 1 <\/td>\n<\/tr>\n
5<\/td>\nConsideration of Cost
Selection of the Sample
FIG. 2 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

E122-00 Standard Practice for Calculating Sample Size to Estimate, With a Specified Tolerable Error, the Average for Characteristic of a Lot or Process<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2000<\/td>\n5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":32742,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[97,2637],"product_tag":[],"class_list":{"0":"post-32741","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-03-120-30","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/32741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/32742"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=32741"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=32741"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=32741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}