Six Sigma Black Belt Certified Practice Exam

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A measurement system analysis is designed to assess the statistical properties of:

Gage variation
Process performance
Process stability
Engineering tolerances

The correct answer is: Gage variation

A measurement system analysis (MSA) is primarily concerned with evaluating the performance and accuracy of a measurement system. The main focus is on gage variation, which encompasses the total variability that can arise from the measurement process itself, including both the inherent variability of the measurement tool and the influence of the measurement procedures. Understanding gage variation is crucial for ensuring that the data collected is reliable and can be used to make valid decisions regarding process performance and stability. By analyzing gage variation, organizations can identify sources of error and improve the measurement system to enhance overall quality management efforts. Process performance refers to how well a process operates within specified limits but does not directly assess the measurement system's reliability. Process stability involves the consistency of process output over time rather than focusing on the measurement system per se. Engineering tolerances define acceptable limits within which product characteristics must fall, but they do not address the measurement process's variability. Thus, while all these aspects are important in the broader context of quality management, the measurement system analysis specifically targets gage variation to ensure the integrity of the measured data.