Acceptance Sampling
In Quality Control
CONTENTS
Introduction of Acceptance
Sampling in Quality Control.
Single and Double Sampling
Plans with OC Curves.
Risk of OC Curves:-
Consumers risk and Producers
risk.
 Acceptance sampling is a method used
to accept or reject product based on
random sample of the product.
 A company cannot test every one of its
products due to either ruining the
products, or the volume of products
being too large.
 The purpose of acceptance sampling is
to accept or reject lots rather than to
estimate the quality of a lot.
 This process allows a company to
measure the quality of a batch with a
specified degree of statistical certainty
without having to test every unit of
Sampling Plans
 Single Sampling Plan:- When a
decision on acceptance or rejection of the
lot is made on the basis of only one
sample, acceptance plan is known as
Single Sampling Plan.
 Double Sampling Plan:- When a
decision on acceptance or rejection of the
lot is based on the basis of two samples,
then acceptance plan is known as Double
OC Curve
 AQL :- Acceptance Quality Level.
 LTPD :- Lot Tolerance Percentage
Defective.
 IQL :- Indifference Quality Level.
OC Curve
0
0.2
0.4
0.6
0.8
1
1.2
P
ProbabilityofAcceptance
LTPDAQL
Producers Risk
Consumers Risk
Risk Of OC Curve
 Producer’s Risk :- Producer's risk is the
probability that a good product will be
rejected as a bad product by the
consumer.
 Consumer’s Risk:- Consumer's risk is a
potential risk found in all consumer-
oriented products, that a product not
meeting quality standards will pass
undetected though the manufacturer's
Thank You!

Acceptance Sampling

  • 1.
  • 2.
    CONTENTS Introduction of Acceptance Samplingin Quality Control. Single and Double Sampling Plans with OC Curves. Risk of OC Curves:- Consumers risk and Producers risk.
  • 3.
     Acceptance samplingis a method used to accept or reject product based on random sample of the product.  A company cannot test every one of its products due to either ruining the products, or the volume of products being too large.  The purpose of acceptance sampling is to accept or reject lots rather than to estimate the quality of a lot.  This process allows a company to measure the quality of a batch with a specified degree of statistical certainty without having to test every unit of
  • 4.
    Sampling Plans  SingleSampling Plan:- When a decision on acceptance or rejection of the lot is made on the basis of only one sample, acceptance plan is known as Single Sampling Plan.  Double Sampling Plan:- When a decision on acceptance or rejection of the lot is based on the basis of two samples, then acceptance plan is known as Double
  • 5.
    OC Curve  AQL:- Acceptance Quality Level.  LTPD :- Lot Tolerance Percentage Defective.  IQL :- Indifference Quality Level. OC Curve 0 0.2 0.4 0.6 0.8 1 1.2 P ProbabilityofAcceptance LTPDAQL Producers Risk Consumers Risk
  • 6.
    Risk Of OCCurve  Producer’s Risk :- Producer's risk is the probability that a good product will be rejected as a bad product by the consumer.  Consumer’s Risk:- Consumer's risk is a potential risk found in all consumer- oriented products, that a product not meeting quality standards will pass undetected though the manufacturer's
  • 7.