ASQ Six Sigma Black Belt 2

Question 1

In the Measure phase of DMAIC, which metric represents the number of defects per million opportunities?

Accepted Answer

DPMO

Answer

DPMO (Defects Per Million Opportunities) is the standard metric used to quantify process defect rates in Six Sigma.

Question 2

A process with a Cpk of 1.33 operates at approximately which sigma level?

Accepted Answer

4 sigma

Answer

A Cpk of 1.33 corresponds to a 4-sigma process, yielding approximately 6,210 DPMO.

Question 3

Which sampling method ensures every possible sample of a given size has an equal probability of selection?

Accepted Answer

Simple random sampling

Answer

Simple random sampling gives every possible sample of size n an equal chance of being chosen, minimizing selection bias.

Question 4

In a cause-and-effect (Ishikawa) diagram for a manufacturing defect, which of the following is NOT a standard 'bone' category?

Accepted Answer

Market

Answer

The standard 6M categories are Man, Machine, Method, Material, Measurement, and Mother Nature (Environment) — Market is not one of them.

Question 5

What does the term 'tollgate review' refer to in a Six Sigma project?

Accepted Answer

A formal phase-gate review where leadership approves advancement to the next DMAIC phase

Answer

Tollgate reviews are structured checkpoints at the end of each DMAIC phase where the team presents findings and obtains sponsor approval to proceed.

ASQ - American Society for Quality Certification Practice Test