Lean Six Sigma Green Belt Certification Measurement System Analysis and Gage R&R 3

Question 1

In attribute Gage R&R, what is primarily evaluated?

Accepted Answer

The consistency of categorical decisions such as pass/fail or go/no-go

Answer

Attribute Gage R&R evaluates how consistently operators make categorical judgments, assessing agreement within and between operators on conforming/nonconforming decisions.

Question 2

What is the effect of large measurement system variation on process capability indices such as Cpk?

Accepted Answer

Large measurement variation inflates observed variation, making the process appear less capable than it actually is

Answer

Measurement system error adds to the observed process variation, causing Cpk to appear lower than the true process capability.

Question 3

What does a Number of Distinct Categories (NDC) value less than 2 indicate?

Accepted Answer

The measurement system cannot discriminate between parts and is inadequate for use

Answer

An NDC below 2 means the gage cannot reliably distinguish between different parts, making it unsuitable for monitoring or controlling the process.

Question 4

Resolution (discrimination) of a measurement system refers to:

Accepted Answer

The smallest detectable unit of change the measurement system can reliably detect

Answer

Resolution is the smallest increment a measurement system can detect; poor resolution prevents the system from sensing meaningful differences between parts.

Question 5

When selecting parts for a Gage R&R study, they should be chosen to:

Accepted Answer

Represent the full range of expected process variation

Answer

Parts must span the full range of expected process variation so the Gage R&R study assesses the measurement system across the conditions it will actually encounter.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Measurement System Analysis and Gage R&R 3