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API STD 521: Guide for Pressure-relieving and Depressuring Systems – Edition 6

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682

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ISO 6139:1993

ISO 6139:1993 Aluminium ores – Experimental determination of the heterogeneity of distribution of a lot

CDN $124.00

Description

The heterogeneity of distribution is characterized by the distribution variance and is determined by experimentally measuring the sampling variance. Because both the composition variance and distribution variance contribute to the measured sampling variance, it is necessary to separate these two components. Two methods of data analysis are permitted: Visman’s theory of sampling which uses classical statistics and the variogram method which gives a better estimate because of taking into account serial correlation between adjacent increments.

Edition

1

Published Date

1993-08-05

Status

PUBLISHED

Pages

7

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

The heterogeneity of distribution is characterized by the distribution variance and is determined by experimentally measuring the sampling variance. Because both the composition variance and distribution variance contribute to the measured sampling variance, it is necessary to separate these two components. Two methods of data analysis are permitted: Visman's theory of sampling which uses classical statistics and the variogram method which gives a better estimate because of taking into account serial correlation between adjacent increments.

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