FREE Certified Six Sigma Black Belt Measurement System Analysis (MSA) Questions and Answers

Question 1

A Gage R&R study was performed on a critical measurement system.
The results showed the % Contribution for the total Gage R&R was 8% and the number of distinct categories (ndc) was 7.
Based on common industry guidelines, what is the most appropriate conclusion?

Accepted Answer

The measurement system is acceptable for its intended use.

Answer

The measurement system is marginal and should be improved if possible.

Answer

The measurement system is unacceptable and must be replaced immediately.

Answer

The study is invalid because the number of distinct categories is too high.

Question 2

In Measurement System Analysis, what does 'reproducibility' evaluate?

Accepted Answer

The variation that occurs when different appraisers measure the same part using the same gage.

Answer

The difference between the average of observed measurements and a known master value.

Answer

The consistency of measurements obtained by one appraiser measuring the same part multiple times.

Answer

The change in measurement bias across the full operating range of the gage.

Question 3

A Six Sigma team needs to determine if their measurement system is accurate. They have several parts with known, traceable master values. Which of the following MSA tools is specifically designed to assess accuracy by comparing measurements to a known standard across the operating range?

Accepted Answer

A Gage Linearity and Bias Study

Answer

A Gage R&R Study

Answer

An Attribute Agreement Analysis

Answer

A Stability Chart

Question 4

An Attribute Agreement Analysis was conducted for a visual inspection process. The results show a high 'Between Appraisers' agreement (95%), but a low 'All Appraisers vs. Standard' agreement (70%). What is the most likely root cause for this issue?

Accepted Answer

The appraisers are using a flawed or poorly understood operational definition for inspection.

Answer

The standard used for the study is incorrect.

Answer

One of the appraisers is significantly less skilled than the others.

Answer

The lighting conditions in the inspection area are inconsistent.

Question 5

To ensure that data collected for a process improvement project is trustworthy, a Measurement System Analysis (MSA) should be performed. In which phase of the DMAIC methodology is this activity most critically and typically completed?

Accepted Answer

Measure

Answer

Define

Answer

Analyze

Answer

Improve

Question 6

A Gage R&R study on a new digital caliper resulted in a number of distinct categories (ndc) of 2. What is the most practical implication of this result for process control?

Accepted Answer

The measurement system can only differentiate between two groups of parts (e.g., 'in-spec' and 'out-of-spec').

Answer

The caliper has excellent discrimination and is suitable for SPC.

Answer

The study had too few parts and must be redone.

Answer

The reproducibility component of variation is unacceptably high.