CQE Measurement Systems Analysis

Question 1

In a Gauge R&R study, 'repeatability' refers to variation caused by:

Accepted Answer

The same operator using the same measurement system repeatedly on the same part

Answer

Different operators using the same measurement system on the same part

Answer

Differences between multiple measurement instruments in a facility

Answer

Environmental factors such as temperature and humidity changes

Question 2

In measurement systems analysis, the difference between accuracy and precision is best described as:

Accepted Answer

Accuracy measures closeness to the true value; precision measures consistency of repeated results

Answer

Accuracy measures consistency of results; precision measures closeness to the true value

Answer

Accuracy and precision are equivalent concepts in quality engineering

Answer

Accuracy applies only to variable data; precision applies only to attribute data

Question 3

'Bias' in a measurement system is formally defined as:

Accepted Answer

The difference between the observed average measurement and the accepted reference value

Answer

The spread of measurements across the full operating range of a gauge

Answer

The variation observed between different operators measuring the same part

Answer

The inconsistency of a single operator's repeated measurements on the same part

Question 4

'Linearity' in a measurement system describes:

Accepted Answer

The consistency of bias values across the full operating range of a gauge

Answer

The straightness and uniformity of scale markings on a measuring instrument

Answer

The ability to take measurements along a straight-line path without deviation

Answer

The correlation between measurement speed and resulting accuracy

Question 5

'Stability' in a measurement system refers to:

Accepted Answer

The change in bias of a measurement system over time when measuring the same master part

Answer

The mechanical durability of a gauge under heavy, repeated use

Answer

The ability of a gauge to remain calibrated under varying operator techniques

Answer

The consistency of a gauge's discrimination level across its measurement range

Question 6

The minimum recommended resolution (discrimination) for a measurement instrument should be:

Accepted Answer

At least one-tenth of the total tolerance or process variation being measured

Answer

Equal to the product specification tolerance

Answer

Equal to the process standard deviation

Answer

Greater than the total reproducibility variation of the gauge

Question 7

The primary purpose of a calibration system in a quality management program is to:

Accepted Answer

Provide traceability of measurement results to national or international standards

Answer

Ensure all measuring equipment is operated only by certified technicians

Answer

Prevent equipment from being used beyond its scheduled replacement date

Answer

Standardize measurement procedures uniformly across all product lines