Certified Six Sigma Black Belt Exam Certified Six Sigma Black Belt Trivia 1

Question 1

What is the term for the ratio of the specification width to the process spread, used to measure process capability?

Accepted Answer

Cp Index

Answer

Process Sigma

Answer

Defects Per Million Opportunities

Answer

Rolled Throughput Yield

Question 2

In a control chart, what does the term 'common cause variation' describe?

Accepted Answer

Variation inherent to the process operating normally

Answer

Variation from special events such as equipment failures

Answer

Variation caused by measurement system error only

Answer

Variation introduced during the Improve phase

Question 3

Which Six Sigma metric accounts for the cumulative probability that all process steps produce defect-free output?

Accepted Answer

Rolled Throughput Yield (RTY)

Answer

Defects Per Unit (DPU)

Answer

Sigma Level

Answer

Process Capability Ratio (Cpk)

Question 4

In hypothesis testing, what is the consequence of committing a Type II error?

Accepted Answer

Failing to detect a real effect that exists

Answer

Rejecting a true null hypothesis

Answer

Setting the alpha level too high

Answer

Using a two-tailed test when one-tailed is appropriate

Question 5

What is the primary objective of a Gauge Repeatability and Reproducibility (Gauge R&R) study?

Accepted Answer

To quantify the amount of variation contributed by the measurement system

Answer

To identify the root cause of process defects

Answer

To establish control limits for a new control chart

Answer

To validate that a process is in statistical control

Question 6

In the DMAIC framework, during which phase would a Black Belt typically apply Statistical Process Control (SPC) charts to sustain improvements?

Accepted Answer

Control

Answer

Define

Answer

Measure

Answer

Analyze