Process capability indices (Cp and Cpk) are used to: Response:

Question

Options

• APredict future financial performance
• BMeasure the process's ability to produce within specified limits
• CAssess employee productivity
• DCalculate raw material costs

• A
  9% (4)
• B
  84% (36)
• C
  5% (2)
• D
  2% (1)

Explanation

Process capability indices (Cp and Cpk) are statistical tools used in quality management to measure how well a manufacturing or business process can produce outputs within specified tolerance limits (option B). Cp measures the potential capability assuming the process is centered, while Cpk accounts for how centered the process actually is - both compare process variation to specification limits.

Why the distractors are wrong:

• A (financial performance): Cp/Cpk are quality engineering metrics, not financial forecasting tools - that's the domain of financial modeling and KPIs.
• C (employee productivity): These indices evaluate process output variation, not individual or team performance - HR metrics serve that purpose.
• D (raw material costs): Cost analysis belongs to accounting and procurement; Cp/Cpk say nothing about input costs.

Memory tip: Think of the "p" in Cp/Cpk as standing for "production within spec." A Cpk ≥ 1.33 is the classic benchmark for a capable process - if you can remember that number, you'll recall that these indices are all about staying within specification limits.

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