IASSC Certified Lean Six Sigma Black Belt

Here you have the best Six Sigma ICBB practice exam questions

You have 324 total questions across 65 pages (5 per page)
These questions were last updated on February 20, 2026
This site is not affiliated with or endorsed by Six Sigma.

Question 1 of 324

A ___________ is used primarily to track the stability of the average value of a metric of interest.

NP Chart

Xbar-R Chart

I-MR Chart

C Chart

Question 2 of 324

For her injection molding project a Belt needed to track the percentage of defectives of a particular sample set so she used a ___________ to display the data?

Individual Chart

C Chart

Xbar Chart

P Chart

Question 3 of 324

Which of these graphs demonstrates conditions which would be sufficient to enable OCAP for the process?

Xbar Chart

Time Series Chart

Neither

Both

Question 4 of 324

Control Charts were developed by Dr. Shewhart to track data over time. To detect Special Cause variation the Control Charts use which of these?

Data shift analysis

Outlier analysis methods

Center Line and Control Limits

None of the above

Question 5 of 324

Common and ______________ Cause Variation are the focus of Statistical Process Control.

Uncommon

Ordinary

Special

Selective

About the Six Sigma ICBB Certification Exam

About the Exam

The Six Sigma ICBB (IASSC Certified Lean Six Sigma Black Belt) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 324 practice questions across 65 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our ICBB questions are regularly updated to reflect the latest exam objectives.