Certified Six Sigma Black Belt Exam Certified Six Sigma Black Belt Measurement System Analysis 1

Question 1

In a Gage R&R study, the 'reproducibility' component specifically measures variation due to:

Accepted Answer

Different operators measuring the same part with the same gage

Answer

Reproducibility captures the variation introduced when different appraisers (operators) measure the same part using the same measurement device, reflecting differences in how people use the instrument.

Question 2

A measurement system has a %Gage R&R of 22%. According to AIAG guidelines, how should this system be classified?

Accepted Answer

Marginally acceptable — may be used based on application importance and cost

Answer

AIAG guidelines classify %Gage R&R between 10% and 30% as marginal. The decision to accept or reject the system depends on factors such as the importance of the application, cost of repair, and risk of misclassification.

Question 3

Which statistical metric in an MSA describes the ability of a measurement system to detect and distinguish between consecutive part values?

Accepted Answer

Number of Distinct Categories (ndc)

Answer

The number of distinct categories (ndc) indicates how many groups of parts the measurement system can reliably differentiate. An ndc of 5 or more is required for the system to be considered adequate for process control.

Question 4

During a linearity study, a technician measures reference standards across the operating range and finds that bias increases consistently as the measured value increases. This indicates:

Accepted Answer

The gage has a non-constant bias across its operating range, indicating a linearity error

Answer

Linearity error occurs when the bias of the measurement system is not consistent across the full operating range — meaning the gage reads more or less accurately depending on the magnitude of the value being measured.

Question 5

A Six Sigma Black Belt conducts a stability study by measuring the same master part daily over 30 days. The control chart shows the measurements drifting upward over time. What does this most likely indicate?

Accepted Answer

The measurement system is losing calibration or wearing over time

Answer

Stability measures how consistent a measurement system's bias is over time. An upward drift on a stability control chart suggests the gage is losing calibration, wearing, or experiencing environmental degradation — all of which compromise measurement accuracy.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Certified Six Sigma Black Belt Measurement System Analysis 1