Quantcast Planned Sampling - mo3270098

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(a) Contract Requirement. Contract requirements together with work
requirements and standards of perform are identified in the performance
requirements  summary (PRS), see Figure 4-1.
The primary method of surveillance
(b) Primary Method of Surveillance.
is 100 percent inspection.
(c) MADR. The maximum allowable defect rate (MADR) is specified in the
PRS.  The MADR is the defect rate in a population above which the
contractor's quality control is considered unsatisfactory. MADR may be
stated as percentage or as an absolute value (e.g., 3 per month)
corresponding to the most efficient route the QAE would follow if all the
locations inspected.  (See 4-520, Sequential Numbering of Work
Location.)
(d) Identification of the Population. Define a single occurrence of
work, and determine the number of occurrences to be performed during the
surveillance period as shown at 4-510.  If the work is being carried out at
several locations, the work locations may be numbered sequentially in the
order corresponding to the most efficient route the QAE could follow. (See
4-520, Sequential Numbering of Work locations.)
(e) Sequential mum&x&q of services. This is not applicable.
(f) Level of Surveillance. This is not applicable.
(g) Determination of the Sample Size. By definition, the total
population.
(h) Selection of the Sample from the population. This is not
applicable.
(i) Evaluation procedure.  List any procedures or checklists used when
doing the inspection. Evaluation procedures should be in enough detail to
allow other QAEs to continue the same manner of inspection using the same
evaluation criteria. Evaluation procedures should include provisions for
recording the successful accomplishment of rework by the contractor.
(j) Analysis of Results. Because every occurrence of the service in
the population was observed, the observed defect rate (ODR) accurately
reflects the true defect rate (DR) such that
x 100
ODR = DR = Total Number of Observed Defects
Total Population
4-730 Planned Sampling.
(a) Contract Requirement  List the contract requirements together with
work requirements and standards of performance from the performance
requirements summary (PRS), see Figure 4-1.
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