Certified Six Sigma Black Belt Exam Measurement System Analysis (MSA) 3

Question 1

Which MSA characteristic describes the change in bias across the operating range of the measurement device?

Accepted Answer

Linearity

Answer

Linearity assesses whether bias is consistent (or changes) across the full range of expected measurements, often evaluated via regression of bias vs. reference value.

Question 2

In attribute MSA, 'Kappa' is used to evaluate which of the following?

Accepted Answer

Agreement between appraisers accounting for chance agreement

Answer

Cohen's Kappa statistic measures inter-rater agreement while correcting for the agreement that would occur by chance alone.

Question 3

A gauge is measured against a reference standard repeatedly over 30 days, and the average measurement drifts upward over time. This indicates a problem with:

Accepted Answer

Stability

Answer

Stability (or temporal stability) refers to the change in bias of a measurement system over time under consistent conditions.

Question 4

When the Number of Distinct Categories (NDC) equals 2, the measurement system can effectively be used for:

Accepted Answer

Sorting parts into two groups only (pass/fail)

Answer

An NDC of 2 means the gauge can only distinguish between two groups, making it suitable for binary classification (go/no-go) but not for process control.

Question 5

In a crossed Gauge R&R design, every operator measures every part. The alternative design where each operator measures only a unique subset of parts is called:

Accepted Answer

Nested Gauge R&R

Answer

A nested (or hierarchical) Gauge R&R design is used when the same part cannot be measured by multiple operators, such as in destructive testing scenarios.

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 (MSA) 3