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ASQ Certified Six Sigma Green Belt (CSSGB)

This certification is for professionals who spend part of their time on process improvement teams and projects. It formally recognizes an individual's proficiency in the Six Sigma DMAIC framework and their ability to support or lead improvement initiatives.

Written against the published specification.

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Pass mark 28/40 45 minutes Real test fee approx $468 USD ASQ (American Society for Quality) How many can I get wrong?
About this practice. Revision Robin is built and maintained by Bloor Engineering Ltd, a UK-registered company. Our ASQ Certified Six Sigma Green Belt (CSSGB) questions are written and reviewed in-house to match the current syllabus, each with a plain-English worked explanation. They are original practice material, not the official exam questions and not affiliated with or endorsed by ASQ (American Society for Quality). Always confirm current test rules, fees and content with the official provider. See our Terms and Privacy.
Start with a free topic drill, see where you stand, then unlock the full mock.
Free practice questions
Try 3 real ASQ Certified Six Sigma Green Belt (CSSGB) questions
Have a go, then reveal the worked explanation. A taster from a bank of 209 original questions. Unlock for unlimited drills and full timed mocks.
Q1. The primary goal of implementing a Six Sigma methodology within an organization is to:
  • A.  Increase the number of product inspections to catch errors.
  • B.  Reduce variation in processes to improve quality and reduce defects.
  • C.  Implement the latest software for statistical analysis.
  • D.  Achieve ISO 9001 certification as the main objective.
Show answer & explanation
✓ Answer: B. Reduce variation in processes to improve quality and reduce defects.
Six Sigma's fundamental objective is to reduce process variation, which leads to fewer defects, improved predictability, and higher quality for the customer.
Q2. A project team is analyzing the Voice of the Customer (VoC) using the Kano model. A product feature that customers do not explicitly ask for, but which causes great satisfaction when present, is known as a:
  • A.  Basic Quality (Must-Be)
  • B.  Performance Quality (One-Dimensional)
  • C.  Excitement Quality (Delighter)
  • D.  Indifferent Quality
Show answer & explanation
✓ Answer: C. Excitement Quality (Delighter)
Excitement or Delighter attributes are unexpected by the customer and can create a 'wow' factor, leading to high levels of satisfaction when they are included.
Q3. A Gage R&R study shows that the largest component of variation is reproducibility (Appraiser Variation). Which of the following is the most appropriate first step to improve the measurement system?
  • A.  Recalibrate the measurement instrument to a known standard
  • B.  Replace the instrument with one that has a higher resolution
  • C.  Review and standardize the measurement procedure and retrain operators
  • D.  Use a different, more varied set of parts for the study
Show answer & explanation
✓ Answer: C. Review and standardize the measurement procedure and retrain operators
High reproducibility indicates inconsistency between operators. The most effective countermeasure is to clarify the standard operating procedure and provide retraining to ensure everyone measures in the same way.
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40 random questions, real timing, marked against the official pass mark. Different every time.
The first 8 of 40 questions are free, with your score on them. Finishing the paper, your result against the pass mark and every answer explained come with the paid version.
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Topic drills
Ten quick questions on one topic, marked instantly with explanations.
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Overview: Six Sigma and the Organization · 30
Define Phase · 30
Measurement System Analysis (MSA) · 30
Process Capability and Performance · 30
Analyze Phase · 30
Improve Phase · 19
Design of Experiments (DOE) · 20
Control Phase & SPC · 20

Who has to sit the ASQ Certified Six Sigma Green Belt (CSSGB)

Who needs a ASQ Certified Six Sigma Green Belt (CSSGB)?

Professionals with at least 3 years of full-time, paid work experience in one or more areas of the CSSGB Body of Knowledge.

The real ASQ Certified Six Sigma Green Belt (CSSGB): format

How many questions are in the ASQ Certified Six Sigma Green Belt (CSSGB)?

The real ASQ Certified Six Sigma Green Belt (CSSGB) has 110 questions and lasts 258 minutes. Our mock uses 40 questions in 45 minutes.

What is the ASQ Certified Six Sigma Green Belt (CSSGB) pass mark?

Real exam pass mark: 550 out of 750 (scaled scoring). Our mock marks you at 28 out of 40, the threshold we mark against.

What it costs, and what a resit costs

How much does the ASQ Certified Six Sigma Green Belt (CSSGB) cost?

Rebooking after a fail: Cannot retake within the same testing window; typically 1-2 months wait for next window.

How hard is it

How hard is the ASQ Certified Six Sigma Green Belt (CSSGB)?

Difficulty: Moderate to High.

Why people fail it

Why do people fail the ASQ Certified Six Sigma Green Belt (CSSGB)?

Figures for the real exam from vertexaisearch.cloud.google.com, checked October 2026. Fees and rules change, so confirm with the test provider before you book.
ASQ Certified Six Sigma Green Belt (CSSGB): common questions
Frequently asked
How long do you get?
The test is timed at 45 minutes. Our full mock runs on the same clock so you can practise your pacing.
Are these the real exam questions?
No. Our questions are original and written to match the current syllabus, so they give realistic practice without copying the official paper. Every answer comes with a plain-English explanation. Always confirm current rules and content with ASQ (American Society for Quality).