CQE Measurement Systems Analysis 2

Question 1

According to the AIAG MSA manual, a Gauge R&R result is generally considered acceptable when % Gauge R&R is:

Accepted Answer

Less than 30%, where under 10% is ideal and 10–30% may be acceptable based on application

Answer

Less than 10% of total variation, with no exceptions

Answer

Between 10% and 30% for all critical characteristics

Answer

Greater than 30% when the gauge is used for monitoring rather than acceptance

Question 2

The 'number of distinct categories' (ndc) in a Gauge R&R study indicates:

Accepted Answer

The number of non-overlapping categories the gauge can reliably distinguish within process variation

Answer

The total number of operators who participated in the study

Answer

The number of measurements taken per part per operator per trial

Answer

The number of parts selected for inclusion in the study design

Question 3

The %P/T ratio in measurement systems analysis compares:

Accepted Answer

Measurement system variation to the engineering specification tolerance

Answer

Total process variation to total measurement system variation

Answer

Operator variation to equipment variation within a Gauge R&R study

Answer

Process standard deviation to the gauge's minimum detectable increment

Question 4

The standard design for a crossed Gauge R&R study per AIAG MSA guidelines typically includes:

Accepted Answer

2 or 3 operators, 10 parts, and 2 or 3 measurement trials per part per operator

Answer

5 operators, 5 parts, and 5 trials each for a total of 125 measurements

Answer

10 operators, 10 parts, and 1 trial each for a total of 100 measurements

Answer

1 operator, 25 parts, and 4 trials each to focus on repeatability

Question 5

Compared to the Average and Range method, the ANOVA method in Gauge R&R analysis provides the additional ability to:

Accepted Answer

Detect and quantify the operator-by-part interaction effect

Answer

Reduce the total number of parts required for a valid study

Answer

Automatically correct for measurement bias during the analysis

Answer

Eliminate outlier measurements from the data before analysis

Question 6

When parts are destroyed during the measurement process, the appropriate MSA study design is:

Accepted Answer

A nested (destructive) Gauge R&R study where parts are nested within operators

Answer

A standard crossed Gauge R&R study with a larger sample size

Answer

A bias and linearity study using a certified reference standard

Answer

A stability study conducted over multiple production shifts

Question 7

When % Gauge R&R falls in the marginal range of 10–30%, the key factor in deciding acceptability is:

Accepted Answer

The importance of the characteristic, cost of gauge improvement, and risk of measurement error

Answer

Whether the gauge manufacturer provides a certificate of accuracy for that range

Answer

Whether the gauge has been in continuous service for more than one calibration interval

Answer

Whether the gauge meets ISO/IEC 17025 laboratory accreditation requirements