ASQ Six Sigma Green Belt 2

Question 1

In Six Sigma, what does the term 'sigma level' measure?

Accepted Answer

The number of standard deviations between the process mean and the nearest specification limit

Answer

Sigma level indicates how many standard deviations fit between the process mean and the nearest specification limit, reflecting process capability.

Question 2

Which tool is used in the Define phase to identify all stakeholders and their requirements for a Six Sigma project?

Accepted Answer

SIPOC diagram

Answer

The SIPOC diagram maps Suppliers, Inputs, Process, Outputs, and Customers, helping define project scope and stakeholder requirements during the Define phase.

Question 3

What is the purpose of a Gage R&R study in the Measure phase?

Accepted Answer

To evaluate the repeatability and reproducibility of a measurement system

Answer

Gage R&R quantifies how much of the observed process variation is due to measurement error versus actual process variation.

Question 4

A process has a Cp of 1.5 but a Cpk of 0.8. What does this indicate?

Accepted Answer

The process has adequate potential but is not centered within the specification limits

Answer

Cp measures process spread potential while Cpk accounts for centering; a high Cp with low Cpk means the process could be capable if properly centered.

Question 5

In hypothesis testing, a Type II error (beta error) occurs when:

Accepted Answer

A false null hypothesis is not rejected

Answer

A Type II error (beta error) is failing to detect a real effect — accepting the null hypothesis when it is actually false.

ASQ - American Society for Quality Certification Practice Test

ASQ - American Society for Quality Certification Practice Test

ASQ Six Sigma Green Belt 2