ISO INTERNATIONAL STANDARD 22514-1 Second edition 2014-06-01 Statistical methods in process management - Capability and performance - Part 1: General principles and concepts Methodes statistiques dans la gestion de processus - Aptitude et performance Partie 1: Principes et concepts généraux Reference number IS0 22514-1:2014(E) LSO @ IS0 2014 I without license from IHS Not for Resale IS0 22514-1:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or 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 [email protected] Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 22514-1:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 3.1 Basicterms. ..1 3.2 Performance, measures, and indices. 3.3 Capability, measures, and indices .10 4 Symbols and abbreviated terms ..13 5 Pre-conditions for application .13 5.1 Aspects about establishing specifications ..13 5.2 Distribution and sample size. ..13 5.3 Materialsusedinstudies. .14 5.4 Special circumstances .14 6 Collection of data. .14 6.1 Traceability of data .14 6.2 Measurement uncertainty ..14 6.3 Data recording .15 6.4 Outliers .15 7 Performance, capability, and process analysis .15 7.1 Six different types of performance and capability .15 7.2 Basic considerations .16 7.3 Machine performance .18 7.4 Process performance and process capability .19 7.5 Position performance. .19 7.6 Measurement process capability 20 7.7 Performance and capability indices 21 8 Results of use ..21 9 Benefits of use .22 10 Limitations of use .22 Bibliography ..23 iii vided by IHS under license with ISt ed without license from IHS Not for Resale