Certified Six Sigma Black Belt Exam FREE Certified Six Sigma Black Belt Assessment Questions and Answers 2

Question 1

A Six Sigma Black Belt notices that a process capability index (Cpk) is 1.0 while Cp is 1.5. What does this indicate?

Accepted Answer

The process mean has shifted away from the target

Answer

The process is centered within specification limits

Answer

The specification limits are too wide

Answer

The sample size is insufficient

Question 2

During the Analyze phase of DMAIC, which tool is most appropriate for identifying the vital few causes from the trivial many?

Accepted Answer

Pareto chart

Answer

Control chart

Answer

Scatter diagram

Answer

Histogram

Question 3

What is the primary purpose of a Measurement System Analysis (MSA) in a Six Sigma project?

Accepted Answer

To quantify the amount of variation introduced by the measurement system

Answer

To calibrate all measurement instruments

Answer

To establish new measurement standards

Answer

To train operators on proper measurement techniques

Question 4

A Black Belt is using Design of Experiments (DOE) and wants to study 5 factors in the fewest runs possible while accepting that some interactions will be confounded. Which design is most appropriate?

Accepted Answer

Fractional factorial design

Answer

Full factorial design

Answer

Central composite design

Answer

Plackett-Burman design

Question 5

In hypothesis testing, a Black Belt sets alpha at 0.05 and obtains a p-value of 0.03. The actual reality is that the null hypothesis is true. What type of error has occurred?

Accepted Answer

Type I error

Answer

Type II error

Answer

No error has occurred

Answer

Measurement error

Question 6

Which of the following best describes the purpose of a SIPOC diagram in the Define phase?

Accepted Answer

To provide a high-level view of the process scope including suppliers, inputs, process, outputs, and customers

Answer

To map every process step in detail

Answer

To identify root causes of defects

Answer

To establish statistical control limits