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PK0-003 · Question #126

A project has produced 2000 of the same deliverable. The project manager does not have time to inspect every deliverable, but would like some assurance the deliverables are meeting the specifications.

The correct answer is C. Statistical sampling. To assure quality for a large number of identical deliverables without inspecting each one, statistical sampling is the appropriate technique as it allows conclusions about the entire batch based on a subset.

Project management concepts

Question

A project has produced 2000 of the same deliverable. The project manager does not have time to inspect every deliverable, but would like some assurance the deliverables are meeting the specifications. Which of the following techniques should be used?

Options

  • ADefect repair review
  • BProcess analysis
  • CStatistical sampling
  • DDesign of experiments

How the community answered

(39 responses)
  • A
    15% (6)
  • B
    5% (2)
  • C
    72% (28)
  • D
    8% (3)

Why each option

To assure quality for a large number of identical deliverables without inspecting each one, statistical sampling is the appropriate technique as it allows conclusions about the entire batch based on a subset.

ADefect repair review

Defect repair review is performed after defects are identified and repaired, to verify the repair, not to initially inspect a large batch of deliverables for adherence to specifications.

BProcess analysis

Process analysis focuses on understanding and improving the processes that create the deliverables, not directly on inspecting the quality of finished products.

CStatistical samplingCorrect

Statistical sampling involves selecting a representative subset of deliverables from a larger population for inspection, allowing the project manager to draw conclusions about the quality of all 2000 deliverables without checking each individually. This technique is efficient for large-volume quality control when 100% inspection is impractical or unnecessary and provides a statistically valid basis for quality assurance.

DDesign of experiments

Design of experiments (DOE) is a statistical method used to determine the relationship between factors affecting a process and its output, primarily for optimizing processes, not for inspecting produced deliverables.

Concept tested: Quality control inspection techniques

Source: https://asq.org/quality-resources/statistical-sampling

Topics

#Quality management#Statistical sampling#Deliverable quality

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