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

The precision of continuous (variable) measurements

Answer

The accuracy of dimensional measurements against a reference standard

Answer

The linearity of the measurement scale across its range

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

Process capability indices are unaffected by measurement system variation

Answer

Large measurement variation makes the process appear more capable than it actually is

Answer

Process capability cannot be calculated until the MSA study is fully complete

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

The measurement system is highly capable and very precise

Answer

The measurement system has excellent repeatability

Answer

The measurement system needs only minor recalibration

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

How close the average measurement is to the true reference value

Answer

The degree of agreement between different operators' measurements

Answer

The time required to complete a single measurement

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

All be as close to the nominal specification as possible to minimize variation

Answer

Include only parts that are confirmed to be within specification

Answer

Be randomly selected from a single short production run

Question 6

Which statement best describes a crossed Gage R&R study design?

Accepted Answer

Every operator measures every part multiple times, creating a fully balanced design

Answer

Each operator measures only their own unique set of parts with no overlap

Answer

Parts are randomly assigned to operators so no operator measures the same part twice

Answer

Only one operator is used but measures all parts multiple times

Question 7

When %Gage R&R falls in the marginal zone between 10% and 30%, the recommended course of action is to:

Accepted Answer

Evaluate the application's criticality and weigh the cost of improvement before deciding

Answer

Immediately replace or scrap the measurement system

Answer

Accept the measurement system without any further investigation

Answer

Automatically recalibrate the gage and rerun the study