ISO IEC GUIDE 98-3 SUPP 1 CORR 1-2009 Uncertainty of measurement - Part 3 Guide to the expression of uncertainty in measurement (GUM 1995) - Supplement 1 Propag.pdf

1、ICS 17.020 Ref. No. ISO/IEC GUIDE 98-3/ Suppl.1:2008/Cor.1:2009(E) ISO/IEC 2009 All rights reserved Published in Switzerland ISO/IEC GUIDE 98-3/Suppl.1:2008 TECHNICAL CORRIGENDUM 1 Published 2009-05-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION INTERN

2、ATIONAL ELECTROTECHNICAL COMMISSION COMMISSION LECTROTECHNIQUE INTERNATIONALEUncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) Supplement 1: Propagation of distributions using a Monte Carlo method TECHNICAL CORRIGENDUM 1 Incertitude de mesure Partie

3、3: Guide pour lexpression de lincertitude de mesure (GUM:1995) Supplment 1: Propagation de distributions par une mthode de Monte Carlo RECTIFICATIF TECHNIQUE 1 Technical Corrigendum 1 to ISO/IEC Guide 98-3/Suppl.1:2008 was prepared by Working Group 1 of the JCGM. Page 68, Table C.5 Replace Table C.5

4、 with the following. The symbols have been corrected. ISO/IEC GUIDE 98-3/Suppl.1:2008/Cor.1:2009(E) 2 ISO/IEC 2009 All rights reservedTable C.5 A t-distribution pseudo-random number generator (Clause C.6) Input parameter Degrees of freedom Output parameter t Draw from a t-distribution with degrees o

5、f freedom Computation a) Generate two draws r 1and r 2independently from the rectangular distribution R(0, 1) b) If r 1 1 / 2, form t = 1/(4r 1 1) and v = r 2/t 2 ; otherwise form t = 4r 1 3 and v = r 2c) If v 1 t /2 or v (1 + t 2 / ) ( + 1)/2 , accept t as a draw from the t-distribution; otherwise repeat from step a) NOTE must be greater than two for the standard deviation of the t-distribution with degrees of freedom to be finite.