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    Free Practice Questions for ASQ Certified Six Sigma Green Belt Certification

    Guide checked for updates:
    9 Oct 2026
    Question bank created:
    9 Sep 2026
    Question bank last updated:
    10 Sep 2026

    Study with 504 exam-style practice questions designed to help you prepare for the ASQ Certified Six Sigma Green Belt.

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    Exam Details

    Key information about ASQ Certified Six Sigma Green Belt

    Official study guide

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    Question formats CertSafari offers
    • Multiple choice
    • True/False
    number of questions:

    100

    Exam Topics & Skills Assessed

    Skills measured (from the official study guide)

    1: Overview: Six Sigma and the Organization

    1.1: Six sigma and organizational goals

    1.2: Lean principles in the organization

    1.3: Design for six sigma (DFSS) methodologies

    2: Define Phase

    2.1: Project identification

    2.2: Voice of the customer (VOC)

    2.3: Project management basics

    2.4: Management and planning tools

    2.5: Business results for projects

    2.6: Team dynamics and performance

    3: Measure Phase

    3.1: Process analysis and documentation

    3.2: Probability and statistics

    3.3: Statistical distributions

    3.4: Collecting and summarizing data

    3.5: Measurement system analysis (MSA)

    3.6: Process and performance capability

    4: Analyze Phase

    4.1: Exploratory data analysis

    4.2: Hypothesis testing

    4.3: Additional analysis methods

    5: Improve Phase

    5.1: Design of experiments (DOE)

    5.2: Implementation planning

    5.3: Lean tools

    6: Control Phase

    6.1: Statistical process control (SPC)

    6.2: Sustain improvements

    6.3: Lean tools for process control

    Techniques & products

    Six Sigma philosophy
    Juran
    Deming
    Shewhart
    Ishikawa
    SMART goals
    KPIs
    Theory of constraints
    Value chain
    Flow
    Takt time
    Just-in-time (JIT)
    Gemba
    Spaghetti diagrams
    Value-stream mapping
    DMADV
    IDOV
    DMAIC
    FMEA
    Design FMEA
    Process FMEA
    Risk Priority Number (RPN)
    Project selection
    Benchmarking
    SIPOC model
    Customer identification
    Surveys
    Focus groups
    Interviews
    Quality Function Deployment (QFD)
    Critical to X (CTX)
    Critical to Quality tree (CTQ)
    Kano model
    Agile methods
    Top-down project management
    Project charter
    Problem statement
    Project scope
    Process maps
    Pareto charts
    Work Breakdown Structures (WBS)
    Gantt charts
    Critical Path Method (CPM)
    PERT charts
    Toll-gate reviews
    Project risk analysis
    Project closure
    Affinity diagrams
    Interrelationship digraphs
    Tree diagrams
    Prioritization matrices
    Matrix diagrams
    Process Decision Program Charts (PDPC)
    Activity network diagrams
    SWOT analysis
    Defects per unit (DPU)
    Rolled throughput yield (RTY)
    Cost of poor quality (COPQ)
    Defects per million opportunities (DPMO)
    Sigma levels
    Process capability indices
    Team evolution stages
    RACI matrix
    Brainstorming
    Nominal group technique
    Multi-voting
    Written procedures
    Work instructions
    Flowcharts
    Basic probability concepts
    Independent events
    Mutually exclusive events
    Multiplication rules
    Permutations
    Combinations
    Central Limit Theorem
    Normal distribution
    Binomial distribution
    Poisson distribution
    Chi square distribution
    Student’s t-distribution
    F-distribution
    Continuous data
    Discrete data
    Nominal scale
    Ordinal scale
    Interval scale
    Ratio scale
    Random sampling
    Stratified sampling
    Check sheets
    Data coding
    Descriptive statistics
    Frequency distributions
    Cumulative frequency distributions
    Scatter diagrams
    Normal probability plots
    Histograms
    Stem-and-leaf plots
    Box-and-whisker plots
    Gauge Repeatability and Reproducibility (GR&R)
    Measurement correlation
    Bias
    Linearity
    Percent agreement
    Precision/Tolerance (P/T)
    Natural process limits
    Specification limits
    Process capability studies
    Cp
    Cpk
    Pp
    Ppk
    Cpm
    Sigma level
    Sigma shift
    Multi-vari studies
    Correlation coefficient
    Linear regression
    P-value
    Statistical significance
    Practical significance
    Sample sizes
    Significance level
    Power
    Type I errors
    Type II errors
    Paired-comparison t-test
    F-test
    ANOVA
    Chi square test
    Gap analysis
    Cause and effect diagrams
    Relational matrices
    5 Whys
    Fault tree analysis
    Independent variables
    Dependent variables
    Factors
    Levels
    Responses
    Treatments
    Errors
    Repetition
    Blocks
    Randomization
    Effects
    Replication
    Main effects analysis
    Interaction plots
    Proof of concepts
    Try-storming simulations
    Pilot tests
    Pull systems
    Kanban
    5S
    Standard work
    Poka-yoke
    Continuous flow
    Setup reduction
    Single-Minute Exchange of Dies (SMED)
    Kaizen
    Kaizen blitz
    SPC Basics
    Common cause variation
    Special cause variation
    Control chart analysis
    Rational subgrouping
    RX-charts
    sX-charts
    ImR (XmR) charts
    Median charts
    p-charts
    np-charts
    c-charts
    u-charts
    Control plan
    Document control
    Training plans
    First-party audits
    Second-party audits
    Third-party audits
    Plan-Do-Check-Act (PDCA)
    Total Productive Maintenance (TPM)
    Predictive maintenance
    Visual factory
    Andon
    Jidoka

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