Ace the 2026 Certified Quality Engineer Exam – Elevate Your Expertise and Shine!

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What does a capability index indicate?

The efficiency of employee training programs

The output produced within specified limits

A capability index is a measure that quantifies how well a manufacturing process meets specified limits for product quality. It reflects the relationship between the inherent variability of the process and the allowable variation defined by the specification limits. When the capability index is calculated, it provides insight into whether the process is capable of producing output that consistently falls within these limits. High values of the capability index indicate that a greater percentage of process output is conforming to specifications, meaning the process is operating efficiently and effectively within desired parameters.

This understanding is crucial in quality engineering as it helps in assessing and improving process stability and capability, aiding in decision-making for process improvements.

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The compliance of financial records

The market share of a product

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