✦ LIBER ✦

A mathematical view of sampling, with references to the degree of accuracy to be obtained

✍ Scribed by Griffin, Martin L.

Publisher: Wiley (John Wiley & Sons)
Year: 1909
Weight: 412 KB
Volume: 28
Category: Article
ISSN: 0368-4075
DOI: 10.1002/jctb.5000280406

No coin nor oath required. For personal study only.

✦ Synopsis

JIy subject involrcs tho whole sampling process, iv11atover tlic nnturc of tlic commodity, substance, or conditions. and thc ninking up of thc ultimatc samplo for nsmy or annlysis, regardloss wlicthor tlic mntcrial to be siuiipled is of siicli a iintiirc tliat tlic scpnrnto portions clrairii cannot bc niixetl, ns for iiistnnce, \rood pulp : or dictlicr tlicy can IJC miscd, ns in tho cnsc of ores, conk;, eta. R. '\V. Siiidnll, of Lontlon, lins dono c011~iderabIc work on one important pliasc of t,liis subjcct, naincly, tlic deterininntion of avcrngc errors. His ~iicthods consist in duplicntc snmpling antl testing, a1111 in this way checking' tlic results or tlcducing tlic probnblc error and sliowing its cor~~mcrcinl significaiicc. So far ns 1 l i ~i o ~, this question under tlic titlo 1 liavc niiiiouiiccd 110s never been dealt with. D. W. Brunton, in a paper, in 1'01. 25 of tlio Tramactions of tho American Institutc of Jlining Engineers, ontitlcd " l'lic l'lioory nud Prncticc of Ore Sampling," in rcnlity enters into it wlicn he says, " 111 proportion ns n mmplc in prcparatioii diminishcs in ~rciglit by qiinrtcring,

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