Page 228 - DMGT501_OPERATIONS_MANAGEMENT

Operations Management Dilfraz Singh, Lovely Professional University

Notes Unit 8: Acceptance Sampling

CONTENTS
Objectives
Introduction
8.1 Acceptance Sampling
8.2 Acceptance Quality Control and Acceptance Sampling

8.3 Lot Acceptance Sampling Plans (LASPs)
8.4 Making a Final Choice
8.5 Summary
8.6 Keywords4

8.7 Self Assessment
8.8 Review Questions
8.9 Further Readings

Objectives

After studying this unit, you will be able to:
Describe the concept of acceptance sampling
Explain the definition of lot acceptance sampling

Discuss various types of sampling plans

Analyse Type I and Type II Errors

Introduction

Acceptance sampling is used to determine whether to accept or reject a lot of material that has
already been produced. By using the word a lot we mean a quantity of product accumulated
under uniform conditions. For example the production of a man during one shift can be called
a lot.

8.1 Acceptance Sampling

Acceptance sampling is an important field of statistical quality control that was popularized by

Dodge and Romig and originally applied by the U.S. military to the testing of bullets during
World War II. If every bullet was tested in advance, no bullets would be left to ship. If, on the
other hand, none were tested, malfunctions might occur in the field of battle, with potentially

disastrous results.
Acceptance sampling is “the middle of the road” approach between no inspection and 100%

inspection. There are two major classifications of acceptance plans: by attributes (“go, no­go”)
and by variables. The attribute case is the most common for acceptance sampling, and will be
assumed for the rest of this section.

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