Lean Six Sigma Green Belt Certification Knowledge 2

Question 1

In the DMAIC methodology, which phase focuses on identifying and validating the root causes of defects?

Accepted Answer

Analyze

Answer

The Analyze phase uses tools like fishbone diagrams and hypothesis testing to identify and confirm root causes.

Question 2

What does a Cp value of 1.33 indicate about a process?

Accepted Answer

The process is capable with some margin

Answer

A Cp of 1.33 means the process spread fits within specification limits with adequate margin, meeting the minimum industry standard for capable processes.

Question 3

Which type of data is best represented by a p-chart in statistical process control?

Accepted Answer

Proportion of defective units

Answer

A p-chart tracks the proportion (fraction) of defective items in subgroups of varying or constant size.

Question 4

A Lean Six Sigma team discovers a process step that adds cost but no customer value. This step is classified as:

Accepted Answer

Non-value-added

Answer

Any step that adds cost without transforming the product in a way the customer values is non-value-added waste and should be eliminated.

Question 5

What is the primary purpose of a SIPOC diagram?

Accepted Answer

To provide a high-level view of the process scope and key elements

Answer

A SIPOC (Suppliers, Inputs, Process, Outputs, Customers) diagram gives a concise high-level overview used early in the Define phase to scope the project.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Knowledge 2