Certified Six Sigma Black Belt Exam Measurement System Analysis 3

Question 1

A Black Belt wants to evaluate whether a measurement system is capable of detecting a shift of 1.5σ in the process. Which MSA metric is most directly relevant?

Accepted Answer

%Study Variation (%SV)

Answer

%Study Variation compares gage variation to the total process spread, directly indicating whether the gage can detect meaningful shifts.

Question 2

During a Gage R&R ANOVA study, a significant Operator × Part interaction is detected. What does this indicate?

Accepted Answer

Some operators are better at measuring specific parts than others, suggesting operator technique varies by part

Answer

A significant Operator × Part interaction means operators do not measure all parts consistently relative to each other — certain operators may have difficulty with specific part geometries or sizes.

Question 3

What is the primary purpose of including at least 10 distinct parts in a crossed Gage R&R study?

Accepted Answer

To ensure the parts represent the full range of the process variation

Answer

Parts should span the full process variation so the study reflects real-world measurement conditions and provides a valid estimate of %Study Variation.

Question 4

In a linearity study, a gage shows a slope of +0.08 across the operating range. What does a positive slope indicate?

Accepted Answer

Bias increases as the reference value increases

Answer

A positive slope in a linearity study means the gage's bias (difference from reference) grows larger as the true value increases.

Question 5

Which of the following scenarios best describes a Type I error in the context of attribute MSA?

Accepted Answer

An appraiser rejects a conforming part (false positive)

Answer

A Type I error (producer's risk) occurs when a good part is incorrectly rejected, creating unnecessary scrap or rework.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Measurement System Analysis 3