What tool and technique includes all costs incurred over the life of a product by investment in preventing nonconformance to requirements?

Question

Options

• ACost of quality
• BMeasure of design
• CStatistical control
• DSystematic analysis

• A
  83% (19)
• B
  4% (1)
• C
  9% (2)
• D
  4% (1)

Explanation

Cost of Quality (CoQ) encompasses all costs associated with achieving quality throughout a product's entire lifecycle - including prevention costs (training, process improvement), appraisal costs (testing, inspections), and failure costs (rework, warranty claims). The key phrase "costs incurred over the life of a product by investment in preventing nonconformance" maps directly to CoQ's framework of balancing prevention investment against failure costs.

Why the distractors are wrong:

• B. Measure of design - Not a recognized PM or quality management term; design metrics don't encompass lifecycle cost analysis.
• C. Statistical control - Refers to Statistical Process Control (SPC), a technique for monitoring process variation using control charts, not a cost accounting framework.
• D. Systematic analysis - A generic term for structured problem-solving; it doesn't specifically address cost categorization over a product's life.

Memory tip: Think "Cost of Quality = Cost of Conformance + Cost of Nonconformance." Any exam question mentioning lifecycle costs, prevention, appraisal, or failure costs together is pointing to CoQ - it's the only quality tool that treats quality as an investment with measurable financial tradeoffs.

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