ISO 24153-2009 PDF

Full title and description

ISO 24153:2009 — Random sampling and randomization procedures. International standard that specifies procedures and methods for generating random samples and for randomization in inspection, survey, auditing and experimental contexts.

Abstract

ISO 24153:2009 provides a set of practical procedures for random sampling and for randomizing order or allocation in experiments and inspections. It describes several methods (mechanical devices, tables of random numbers and portable computer algorithms), explains how to document and audit randomization results, and gives guidance on applying random procedures where a regulation, contract or another standard requires random sampling or randomization. It does not prescribe sample-size selection or strategy; users should consult other standards or authoritative references when those are required.

General information

• Status: Published / Confirmed
• Publication date: 2009 (ISO edition 1, approved late 2009)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 03.120.30 — Application of statistical methods
• Edition / version: Edition 1 (2009)
• Number of pages: 31 (ISO core document; national adoptions may have additional forewords/annexes)

Scope

This standard applies whenever a regulation, contract or another standard requires the use of random sampling or randomization. Typical applications include acceptance sampling of discrete units presented for inspection, sampling for surveys, auditing of quality-management results, selecting experimental units, allocating treatments and determining evaluation order in designed experiments. The standard defines methods for producing and recording random selections and for enabling external review or audit of randomization procedures and results. It does not address selection of an overall sampling strategy or determination of sample size.

Key topics and requirements

• Definitions and fundamental concepts of random sampling and randomization.
• Practical methods for generating randomness: mechanical devices, tables of random numbers and portable computer algorithms.
• Procedures for selecting units from lots and for producing random orders or allocations in experiments.
• Documentation and record-keeping to support auditing and external review of randomization results.
• Guidance on applicability (acceptance sampling, surveys, auditing, experimental design) and limits of the standard (no sample-size guidance).
• Cross-references to related ISO and authoritative standards for sampling plans and statistical methods.

Typical use and users

Used by quality managers, statisticians, auditors, laboratory personnel, regulatory compliance officers, researchers and experimenters who need to implement, document or verify random sampling or randomization procedures. Also used by standards writers and contract authors who require prescribed randomization methods in specifications or procurement documents.

Related standards

Standards commonly used alongside ISO 24153 include sampling and acceptance standards and other statistical-methods documents (for example, standards addressing acceptance sampling, variable sampling plans, and experiment design). Examples of related standards and series include ISO 2859 (acceptance sampling by attributes), ISO 3951 (acceptance sampling by variables) and other ISO technical documents covering sampling strategy, inspection and experimental procedures.

Keywords

random sampling, randomization, random numbers, tables of random numbers, sampling procedures, acceptance sampling, survey sampling, audit sampling, experimental randomization, statistical methods, documentation

FAQ

Q: What is this standard?

A: ISO 24153:2009 is an international standard that specifies practical procedures for generating random samples and carrying out randomization (order or allocation) using mechanical methods, random-number tables or algorithms.

Q: What does it cover?

A: It covers methods to obtain and document random selections for inspections, surveys, audits and experiments, and guidance for auditing or externally reviewing randomization results. It does not provide guidance on choosing sampling strategies or determining sample sizes.

Q: Who typically uses it?

A: Quality and compliance professionals, statisticians, laboratory managers, auditors, researchers and anyone who must implement or verify randomized selection or allocation procedures.

Q: Is it current or superseded?

A: It was published as ISO edition 1 in 2009 and is listed as a published/confirmed international standard. Users should check with their national standards body or the ISO catalogue for the very latest lifecycle status before relying on it for regulatory or procurement requirements.

Q: Is it part of a series?

A: It is a standalone ISO document within the broader field of application of statistical methods; it is commonly used together with other ISO sampling and inspection standards (for example the ISO 2859 and ISO 3951 series).

Q: What are the key keywords?

A: Random sampling, randomization, random-number tables, sampling procedures, acceptance sampling, experimental design, auditability, statistical methods.