Are the questions aligned with the ASQ CSSGB Body of Knowledge?

Yes. Each question is written around topics included in the published CSSGB Body of Knowledge and is tagged to the relevant BoK area. These are original practice questions and are not copied from the actual ASQ exam.

In Review Mode, you receive the correct answer and explanation immediately after answering each question. It is designed for learning, not just scoring, so you can correct misunderstandings before moving to the next question.

Does the quiz include calculations?

Yes. The free set includes a balanced mix of conceptual questions, applied scenarios and short calculations. The goal is to help you experience several common CSSGB question styles.

What is included in the full CSSGB practice-question package?

The complete package provides additional CSSGB -style practice sets with broader Body of Knowledge coverage, detailed explanations and more opportunities to work on calculations, scenarios and commonly confused concepts.

Does purchasing the practice tests include the ASQ examination?

No. These are independent exam-preparation materials. Registration, eligibility review and the official certification examination are handled separately by ASQ.

CSSGB Design of Experiments Practice Quiz

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Free sample questions

1 questions from this set, shown in full with the correct answer and the reasoning behind it. Read them as a study resource.

Q1.A trainee wrote the following descriptions of four experimental design terms.

$\begin{array}{l|l} \hline \textbf{Term} & \textbf{Description written} \\ \hline \text{Factor} & \text{An input deliberately changed in the study} \\ \text{Level} & \text{One execution of a chosen factor setting} \\ \text{Response} & \text{The measured output of interest} \\ \text{Treatment combination} & \text{A setting of every factor applied together} \\ \hline \end{array}$

Which term has been described incorrectly?
- A.Factor
- B.Level✓ Correct answer
- C.Response
- D.Treatment combination
Explanation
A level is one of the values a factor is set to, such as 160 degrees or 190 degrees. The description written belongs to a run, which is one execution of a treatment combination, so the entry is wrong. The other three are correct, and the chain worth memorising is that a factor is the variable, a level is one of its values, a treatment combination is one setting of every factor at once, and a run is one execution of that combination.
Reference: CSSGB BoK V

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What you get

How well do you understand Design of Experiments?

20 exam-style CSSGB questions focused on Design of Experiments
Full explanation for every question
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Strengthen Your Understanding of Design of Experiments

Preparing for the ASQ Certified Six Sigma Green Belt exam?

This paid 20-question practice quiz focuses specifically on Design of Experiments (DOE) within the CSSGB Body of Knowledge.

The questions include a practical mix of:

DOE terminology, including factors, levels, treatments, and responses
Independent and dependent variables
One-factor-at-a-time versus designed experiments
Full and fractional factorial designs
Two-level factorial designs and coded factor levels
Main effects and interaction effects
Main effects plots and interaction plots
Pareto charts of experimental effects
Randomization and its purpose
Blocking and nuisance variables
Replication versus repeated measurements
Experimental error and sources of variation
Confounding and aliasing in fractional factorial designs
Center points and detection of curvature
Screening experiments
Calculating experimental runs and evaluating design options
Interpreting DOE results and selecting appropriate conclusions

Learn from Every Question

This quiz is offered in Review Mode, so you will see the correct answer and a clear explanation immediately after each response.

Each explanation helps you understand:

Why the correct answer is right
Which DOE principle or concept is being tested
Why the other options are less appropriate
How to interpret common DOE results and plots
How DOE concepts may appear in a CSSGB-style question

The goal is not simply to check your score. It is to help you understand how designed experiments are planned, conducted, analyzed, and interpreted in Six Sigma improvement projects.

Part of the Paid CSSGB Practice Package

This 20-question quiz is included in the complete CSSGB Practice Test Package.

Use it to:

Strengthen your understanding of DOE fundamentals
Distinguish between randomization, blocking, and replication
Interpret main effects and interactions
Understand factorial and fractional factorial designs
Practise DOE calculations and design-selection questions
Recognize confounding, curvature, and experimental error
Improve your confidence before the CSSGB exam
Learn from detailed explanations as you progress

Ready to Test Your Design of Experiments Knowledge?

Complete the 20-question Review Mode quiz and use every incorrect answer as a guide for further study.

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What this quiz covers

Overview: Six Sigma and the Organization

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CSSGB - 6. Design of Experiments