1、 IEC/TR 60493-2Edition 1.0 2010-03TECHNICAL REPORT Guide for the statistical analysis of ageing test data Part 2:Validation of procedures for statistical analysis of censored normally distributed data IEC/TR 60493-2:2010(E)LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION
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12、,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TR 60493-2 IEC:2010(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Terms,symbols and definitions.7 3.1 Definitions.7 3.2 Symbols.10 4 Statistical calculations.11 4.1 General.11 4.1.1 Objectives of the
13、 analysis.11 4.1.2 Outline of work program.11 4.1.3 Computer programs.12 4.2 Calculations for complete(uncensored)data.12 4.2.1 Sub-group.12 4.2.2 Group(several sub-groups).12 4.2.3 The F-function.13 4.2.4 Bartletts 2 function.13 4.2.5 Students t function.13 4.2.6 Students t function for the differe
14、nce of two means.14 4.3 Censored data groups.14 4.3.1 Sub-groups.15 4.3.2 Group(several sub-groups)Analysis of variance.15 4.3.3 Group(several sub-groups)Analysis of covariance(regression analysis).16 4.3.4 Difference of means of 2 sub-groups.18 4.4 Complete(uncensored)data.19 5 Random number genera
15、tion.19 5.1 General.19 5.2 Uniform variates.19 5.3 Normal variates.20 6 Validation procedures.20 6.1 Size of samples.20 6.2 Validation of random number generation.21 7 Outline of tasks.21 7.1 Optimum size of samples.21 7.2 Uniformly and normally distributed random number generation.22 7.3 Examine pr
16、operties of single sub-groups.22 7.3.1 Correlation of mean and standard deviation(SD).22 7.3.2 Distribution and possible bias of mean and SD estimates.22 7.4 Examine properties of compound groups.22 7.5 Procedure for testing difference of two means.22 8 Discussion of results and conclusions.22 8.1 Optimum size of samples.22 8.2 Correlation coefficients of mean and standard deviation of sub-groups.22 8.3 Values of mean,variance and SD of mean of censored data sub-groups.22 8.4 Distribution functi
