Certified Six Sigma Black Belt Exam Measurement System Analysis (MSA) 4

Question 1

The smallest input change that a measuring device can detect and display is known as the gauge's:

Accepted Answer

Discrimination (resolution)

Answer

Discrimination (also called resolution or smallest readable unit) is the smallest detectable increment that the measurement device can resolve.

Question 2

According to AIAG MSA guidelines, the measurement device's resolution (discrimination) should be at most what fraction of the process variation or tolerance?

Accepted Answer

1/10

Answer

The gauge's smallest readable increment should be no greater than 1/10 of either the process variation (6σ) or the engineering tolerance to ensure adequate discrimination.

Question 3

In a Type 1 Gauge Study, which two key statistics are primarily evaluated?

Accepted Answer

Cg and Cgk

Answer

A Type 1 Gauge Study evaluates Cg (gauge capability) and Cgk (gauge capability considering bias) by having a single operator measure a reference part multiple times.

Question 4

If operator-by-part interaction is found to be statistically significant in an ANOVA Gauge R&R, what is the most likely root cause?

Accepted Answer

Operators use inconsistent techniques that affect certain parts differently

Answer

A significant operator-by-part interaction means that operators rank or measure parts differently from each other, suggesting non-uniform operator technique or part-handling differences.

Question 5

A measurement system evaluation shows σ²_total = 1.00, σ²_part = 0.85, σ²_GRR = 0.15. What is the %GRR (study variation method, using variance)?

Accepted Answer

15%

Answer

%GRR using variance contribution = σ²_GRR / σ²_total × 100 = 0.15/1.00 × 100 = 15%.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Measurement System Analysis (MSA) 4