| Exam Code | CSSBB |
| Exam Name | Certified Six Sigma Black Belt |
| Questions | 285 Questions Answers With Explanation |
| Update Date | May 28,2026 |
| Price |
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Control Charts were developed by Dr. Shewhart to track data over time. To detect Special Cause variation the Control Charts use which of these?
A. Data shift analysis
B. Outlier analysis methods
C. Center Line and Control Limits
D. None of the above
Fractional Factorial designs are used to reduce the time and cost of experiments because the ____________ has been lowered.
A. Number of data measurement points
B. Number of runs
C. People involved
D. Output summary
Calculate the Rolled Throughput Yield of this process using this data. Data: unit input: 1215, unit output: 1180, defects repaired: 184, scrap: 42
A. 80.85%
B. 81.40%
C. 82.23%
D. 84.96%
Each of the items listed would impact the Process Capability for a process with a continuous output except ___________________.
A. Shape of process data distribution (e.g. Normal Distribution)
B. Process Technology
C. Process Standard Deviation
D. Seasonal variation in process
Which of the items listed do not define what an X-Y Diagram is?
A. Created for every project
B. Based on team's collective opinions
C. Updated whenever a parameter is changed
D. Used to show each step in a process
E. A living document throughout project lifecycle
If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement(s) are correct? (Note: There are 3 correct answers).
A. The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions are confounded with the 3-way interactions
B. The Main Effects are confounded with only 4-way interactions
C. The Experimental Design is half-fractional
D. The experiment has 8 experimental runs with the first factor at the high level
E. The experiment has only 4 experimental runs with the 5th factor at the high level
Customers make their decisions based on Features, Integrity (of the seller) Delivery and ___________?
A. Color
B. Expense
C. Season
D. None
Early in a project a Belt will want to begin to identify and evaluate risk factors for the subject process and will therefore begin building a(n) ______________.
A. SIPOC
B. FMEA
C. Business Case
D. Team charter
The English words used for the 5S’s are __________ , _____________ , Shining, Standardizing and Sustaining. (Note: There are 2 correct answers).
A. Shaping
B. Sorting
C. Shifting
D. Straightening
The _______ is the most frequently occurring value in a distribution of data.
A. Median
B. Mean
C. Center Point
D. Mode
Which of these might contribute to similar distributions having Unequal Variance?
A. Extreme tails
B. Outliers
C. Multiple Modes
D. All of the above
One of the methods of testing a Measurement System is to have at least two people take multiple readings from the same instrument and of the same sample set to judge the Repeatability and Reproducibly. This approach is called a ______________ study.
A. Correlation Analysis
B. Gage R & R
C. Bimodal
D. Dual Attribute
Which statement(s) are incorrect about Fractional Factorial Designs?
A. A Half Fractional Design for 5 factors has the same number of experimental runs as a Full Factorial Design for 4 factors assuming no repeats or replicates or Center Points
B. Quarter Fractional experiments can exist for those with 4 factors
C. Resolution V design is desired while controlling costs of experimentation
D. Half Fractional experiments do not exist for those designs with only 2 factors
A statistical test or Hypothesis Test is performed to reject or fail to reject a stated hypothesis and it converts the Practical Problem into a Statistical Problem.
A. True
B. False
A Belt has determined that the inventory of repair parts at a rework station can be reduced by 45%. According to Cost of Poor Quality (COPQ) definitions inventory reduction would be considered _______________.
A. Soft Savings
B. COPQ efficiency
C. Median Savings
D. Hard Savings
Production Line 1 is able to complete 500 units per shift. Production Line 2 is able to finish 1,500 units per shift. Production Line 2 is 3 times faster than Production Line 1. This analysis is an example of ______________ Scale Data.
A. Nominal
B. Ratio
C. Ordinal
D. Interval
Fractional Factorial designs are used to reduce the ____________ because the number of runs has been lowered.
A. Time and cost of experiments
B. Number of people involved
C. Number of data measurement points
D. Output summary
Two of the key deliverables for the Measure Phase are a robust description of the process and its flow and an assessment of the Measurement System.
A. True
B. False
A(n) ______________ is best used to compare a Machine 1 average quality characteristic to the same quality characteristic of Machine 2.
A. F test
B. 1-Sample t-test
C. 2-Sample t-test
D. ANOVA test
A dock worker for a feed supplier was tasked with assuring the proper weight in the feed bags as they left the dock. One of the columns listed the range of weight of the bags included in the studies. This required plotting a Histogram of the weight of the bags. While drawing the Histogram the x-axis contained a certain scale of data. Pick the scale of data that is appropriate for Histograms.
A. Ordinal Scale Data
B. Interval Scale Data
C. Nominal Scale Data
D. Ration Scale Data
