BS ISO 13909-7:2001
Current
The latest, up-to-date edition.
Hard coal and coke. Mechanical sampling Methods for determining the precision of sampling, sample preparation and testing
Hardcopy , PDF
English
30-04-2008
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Formulae relating to factors affecting precision
6 Estimation of primary increment variance
7 Methods for estimating precision
8 Calculation of precision
9 Methods of checking sample preparation and
testing errors
Annex A (informative) - Variogram method for determining
variance
Annex B (informative) - Grubbs' estimators method for
determining sampling precision
Bibliography
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.