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

The measurement instrument's inherent mechanical limitations

Answer

Environmental factors such as temperature and humidity

Answer

Part-to-part variation within the process

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

Acceptable — no action required

Answer

Unacceptable — the measurement system must be immediately replaced

Answer

Excellent — the system exceeds all quality standards

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

Bias

Answer

Linearity

Answer

Stability

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

The measurement system has poor repeatability at high values

Answer

The gage needs a zero-point calibration adjustment only

Answer

Reproducibility error is present among multiple operators

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

High reproducibility variation among operators

Answer

The process mean has shifted, inflating the MSA results

Answer

Part-to-part variation is too high for the gage to detect

Question 6

In an attribute MSA, a Black Belt asks three appraisers to evaluate 50 parts twice each and compares their accept/reject decisions. Which metric is most appropriate for quantifying agreement between appraisers?

Accepted Answer

Cohen's Kappa statistic

Answer

Percent R&R

Answer

Signal-to-noise ratio

Answer

Cp index