IS 4905 : 2015/ISO 24153 : 2009 Random Sampling and Randomization Procedures

NATIONAL FOREWORD

This Indian Standard which is identical with ISO 24153 : 2009 ‘Random sampling and randomization procedures’ issued by the International Organization for Standardization was adopted by the Bureau of Indian Standards on the recommendation of the Statistical Methods for Quality and Reliability Sectional Committee and approval of the Management and Systems Division Council.

Sampling is of fundamental importance for estimating the quality of a lot or to ascertain its conformity to the requirements of a specification. The economy, reliability and practicability of the sampling procedure have made them almost indispensible in most of the industrial and trade applications. However, the reliability of the conclusions drawn on the basis of the sample depends on its representativeness and the method of its selection. Random sampling and randomization procedures are, therefore, the cornerstone to the validity of many statistical methods used in experimentation, whether for industrial quality control and improvement purposes or for designed experiments in the medical, biological, agricultural, or other scientific fields.