Using Acceptance Sampling to Improve Quality
DEPARTMENT OF COMMERCE AND MANAGEMENT STUDIES
UNIVERSITY OF CALICUT
SEMINAR REPORT
ON
ACCEPTANCE SAMPLING
SUBMITTED BY
VEENA M
ANU SANKAR NK
VIPIN R
ABSTRACT Acceptance sampling may be applied where large quantizes of similar items or large batches of material being bought or are being bought or are being transferred from one part of organization to another. Unlike statistical process control where the purpose is to check production as it proceeds, acceptance sampling is applied to large batches of goods which have already been produced. Acceptance sampling is a method used to determine if you accept or reject a particular lot of products. This is done by first establishing an acceptance plan or sampling plan which sets the product acceptability criteria. This is known as the decision rule. The decision rule is an rule that explicitly states how many out-of-specification items (in a batch of arbitrary size) can be shipped to a customer. Depending on the type of sampling plan being utilized by the company, there could be more than one decision rule in effect (for double or multiple plans). Sampling plans utilizing can be single, double, or multiple. Single sampling plan consists of a sample size n and an acceptance number c. The lot is rejected if there is more than c defective for the sample size.
INTRODUCTION
Acceptance Quality Control and Acceptance Sampling It was pointed out by Harold Dodge in 1969 that Acceptance Quality Control is not the same as Acceptance Sampling. The latter depends on specific sampling plans, which when implemented indicate the conditions for acceptance or rejection of the immediate lot that is being inspected. The former may be implemented in the form of an Acceptance Control Chart.
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
UNIVERSITY OF CALICUT
SEMINAR REPORT
ON
ACCEPTANCE SAMPLING
SUBMITTED BY
VEENA M
ANU SANKAR NK
VIPIN R
ABSTRACT Acceptance sampling may be applied where large quantizes of similar items or large batches of material being bought or are being bought or are being transferred from one part of organization to another. Unlike statistical process control where the purpose is to check production as it proceeds, acceptance sampling is applied to large batches of goods which have already been produced. Acceptance sampling is a method used to determine if you accept or reject a particular lot of products. This is done by first establishing an acceptance plan or sampling plan which sets the product acceptability criteria. This is known as the decision rule. The decision rule is an rule that explicitly states how many out-of-specification items (in a batch of arbitrary size) can be shipped to a customer. Depending on the type of sampling plan being utilized by the company, there could be more than one decision rule in effect (for double or multiple plans). Sampling plans utilizing can be single, double, or multiple. Single sampling plan consists of a sample size n and an acceptance number c. The lot is rejected if there is more than c defective for the sample size.
INTRODUCTION
Acceptance Quality Control and Acceptance Sampling It was pointed out by Harold Dodge in 1969 that Acceptance Quality Control is not the same as Acceptance Sampling. The latter depends on specific sampling plans, which when implemented indicate the conditions for acceptance or rejection of the immediate lot that is being inspected. The former may be implemented in the form of an Acceptance Control Chart.
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
References: 1. Fundamentals of Quality Control and Improvement, second edition, Amitava Mitra, Prentice Hall of India Pvt. Ltd. New Delhi 2. www.google.com