ISO INTERNATIONAL STANDARD 9276-3 First edition 2008-07-01 Representation of results of particle size analysis Part 3: Adjustment of an experimental curve to a reference model Représentation de données obtenues par analyse granulométrique - Partie 3: Ajustement d'une courbe expérimentale a un modele de référence Reference number ISO 9276-3:2008(E) @ ISO 2008 HS under ted without license from IHS Not for Resale ISO 9276-3:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHTPROTECTEDDOCUMENT @ ISO2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ ISO 2008 - All rights reserved I without license from IHS Not for Resale ISO 9276-3:2008(E) Contents Page Foreword Introduction 1 Scope 2 Normative references . 3 Symbols and abbreviated terms 4 Adjustment of an experimental curve to a reference model 4.1 4.2 Quasilinear regression method. 4.3 Non-linear regression method... 5 Goodness of fit, standard deviation of residuals and exploratory data analysis ... 6 6 Conclusions Annex A (informative) Influence of the model on the regression goodness of fit... Annex B (informative) Influence of the type of distribution quantity on the regression result .. Annex C (informative) Examples for non-linear regression.. Annex D (informative) x2-Test of number distributions of known sample size. Annex E (informative) Weighted quasilinear regression. 20 Bibliography 23 Copyright internatinal Oorganizaio for standardizalion ghts reserved ii se from IHS Not for Resale