How To Pass Six Sigma Black Belt Certification CSSBB Exam?

Jonnie Karnath2023-08-09T08:49:59+00:00

If you are planning to take the Six Sigma Black Belt Certification CSSBB Exam, it is important to be well-prepared. One way to assess your level of knowledge and readiness is by taking a free online CSSBB Certification practice exam, which is available at Certspots. This exam has been designed to simulate the actual exam, and it covers key concepts and principles of Six Sigma methodology. In addition to assessing your strengths and weaknesses, taking this exam can help you identify areas where you may need to focus your studies. You can access this exam anytime and anywhere, making it a convenient and effective way to prepare for the CSSBB Exam. So why not take advantage of this free resource and give it a try? See for yourself how well you measure up and get ready to pass the CSSBB Exam with confidence!

Page 1 of 9

1. Calculate the Rolled Throughput Yield of this process using this data.

Data: unit input: 1215, unit output: 1180, defects repaired: 184, scrap: 42

80.85%

81.40%

82.23%

84.96%

2. Which of these items are not part of what is necessary for successful Kaizens?

Good lighting

Management support

Operator support

Analysis tools

3. What is the Ppk of a process with a spread of 24 units, an average of 68, an upper limit of 82 and a lower limit of 54?

1.68

2.00

4.00

4.42

4. To be an effective Lean Six Sigma practitioner one must understand the difference between ___________________________.

ANOVA and the Analysis of Variance

Nonparametric tests and tests of Non-normal Data

Practical and Statistical significance

F-test and test of variances of 2 samples

5. Which Element of Waste best describes "the unnecessary movement of materials and goods"?

Overprocessing

Inventory

Motion

Conveyance

6. A Factorial Experiment based on a Level 2 Design with 4 factors would require 16 runs to fully assess the interactions.

True

False

7. Six Sigma is a business improvement discipline whose fundamental view is based on a _________ oriented approach of the business.

Profit

Performance

Process

Predatory

8. When doing Hypothesis Testing on Non-normal data Belts will use a ________________ to compare more than two sample proportions to each other.

Z score Table

Sakami Table

Mean-to-Mode Analysis

Contingency Table

9. A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated.

The Alternative Hypothesis in the above example is?

The Standard Deviation is equal to $300

The Mean is less than $4,320

The Mean is equal to $4,060

The Mean is less than $4,200

The Mean is greater than $ 4,200

10. When a Belt properly analyzes the results of an experiment he must examine the Residuals in expectation of finding all of the following except _________.

Some Residuals higher than others

Some Residuals lower than others

All Residuals within 2 Standard Deviations of the Mean

Residuals will represent a Linear Regression

Page 2 of 9

11. When we compare short-term and long-term Capability which of these is true?

Cp is better for the short term

Both short-term and long-term performance are alike

Performance tends to improve over time

Cp is better for the long-term

12. If a Belt needed to model the data for the number of weaves in section of carpet fabric she would use the _____________ Distribution approach.

Poisson

Extended

Exponential

Weibull

13. A valid mathematical Regression represents all of the characteristics shown except ___________________________.

The residuals when plotted follow a Normal Distribution

The sum of the residuals is zero

All of the standardized residuals will be within ±3 Standard Deviations

Most standardized residuals are within ±2 Standard Deviations

14. Two of the key deliverables for the Measure Phase are a robust description of the process and its flow and an assessment of the Management System.

True

False

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

Prediction

Ideation

Capability

Variation

16. The Japanese born function of a Kanban event utilizes a specific, step-by-step approach meant to bring about major changes to a process.

True

False

17. Sally bought a blender from her local appliance store. When she changed blades the blender would not function.

For the manufacturer this would be categorized as what type of cost?

Internal Failure Costs

External Failure Costs

Prevention Costs

Appraisal Costs

18. Time is always the metric on the horizontal scale of a(n) ___________ Chart.

Pareto

Xbar

Multi-Vari

19. The reported Cpk for a process with an average of 104 units, a spread of 18 units and upper and lower specification limits of 122 and 96 units would be?

0.5

0.89

1.00

2.00

20. A Full Factorial experiment using a 2 level 4 factor approach has been proposed to test the viability of an extrusion machine experiment.

How many treatment combinations will this approach involve?

Page 3 of 9

21. A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $3,800 in order to stay within budget. Using a sample of 38 first article components, a Mean of the new product upgrade price of $3,680, and a Standard Deviation of $120 was estimated.

In order to increase the Long Term Z value to 5, what is the maximum long term variation in pricing the Belt can accept for his upgraded critical raw material component?

$12

$24

$48

22. The class score distribution of schools in a metropolitan area is shown here along with an analysis output. Comment on the statistical significance between the Means of the two distributions. Select the most appropriate statement.

The two class Means are statistically different from each other

The two class Means statistically not different from each other

Inadequate information on class Means to make any statistical conclusions

A visual comparison shows that class Means are not statistically different

23. A Belt is analyzing data and upon creation of the graphical analysis sees multiple modes. One of the primary reasons this could occur is because the process has experienced a ____________________.

Significant change from one shift to another

Sizable Measurement System error

Catastrophic failure of some sort

Any one of these

24. On a _________________ one can see a pattern from the graphed points such that conclusions can be drawn about the largest family of Variation.

Multi-Vari Chart

Weighted Scale

X-Y Matrix

Poisson Chart

25. Choose those characteristics of a Simple Linear Regression (SLR) Analysis that are applicable. (Note: There are 3 correct answers).

The Correlation Coefficient is always greater than the Regression Coefficient in a SLR

General Regression Analysis deals only with Continuous Data

Non-linear Regressions can explain curvature when with more statistical confidence than Linear Regressions

SLR can help quantify the significance of variation in X that influences the variation in Y via a mathematical equation

A Correlation does not explain causation but a Regression Analysis with a statistically valid mathematical equation does explain causation

26. The Waste of Overproduction is defined as ______________________.

The unnecessary movement of people and equipment

The liability of materials that are bought, invested in and not immediately sold or used

Producing more than the next step needs or more than the customer buys

The extra movement of material

27. Sally and Sara sell flower pots at their garage sale. Sally motivates Sara mentioning that they will sell a minimum of 15 pots per day if the outside temperature exceeds 60o F. From a sample, whose population is assumed to follow a Normal Distribution, taken for 30 days at 60 degrees or more an average of 13.6 pots per day were sold with a Standard Deviation of 0.7 pots. The statistical Degrees of Freedom for this example are?

28. Special Cause Variation falls into which two categories? (Note: There are 2 correct answers).

Natural

Short term

Assignable

Pattern

29. Fractional Factorial designs are used to reduce the ____________ because the number of runs has been lowered.

Time and cost of experiments

Number of people involved

Number of data measurement points

Output summary

30. Which statement(s) are incorrect about Fractional Factorial Designs?

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

Quarter Fractional experiments can exist for those with 4 factors

Resolution V design is desired while controlling costs of experimentation

Half Fractional experiments do not exist for those designs with only 2 factors

Page 4 of 9

31. For Attribute Data, Process Capability is defined as the average proportion of nonconforming products.

True

False

32. When variation is removed from the output of a process then the process customer can have more confidence in the experience that results from the process.

True

False

33. The English words used for the 5S’s are __________ , _____________ , Shining, Standardizing and Sustaining. (Note: There are 2 correct answers).

Shaping

Sorting

Shifting

Straightening

34. Sally and Sara sell flower pots at their garage sale. Martha motivates Rose mentioning that they will sell a minimum of 16 pots per day if the outside temperature exceeds 60o F. From a sample, whose population is assumed to follow a Normal Distribution, taken for 30 days at 60 degrees or more an average of 15.2 pots per day were sold with a Standard Deviation of 0.6 pots.

What is the Z value for this sales process?

0.67

1.13

1.33

2.66

35. When a Belt properly analyzes the results of an experiment he must examine the Residuals in expectation of finding all of the following except _________.

Some Residuals higher than others

Residuals will represent a Linear Regression

All Residuals within 2 Standard Deviations of the Mean

Some Residuals lower than others

36. An operator is measuring the distance between two points.

Which is most likely to be influenced by the operator?

Precision of the measurement

Accuracy of the measurement

Calibration of the instrument

All of these answers are correct

37. Which of these might contribute to similar distributions having Unequal Variance?

Extreme tails

Outliers

Multiple Modes

All of the above

38. Appropriate measures means that measurements are ______________.

Representative

Sufficient

Contextual

Relevant

All of these answers are correct

39. For a Normal Distribution as samples size increases the Range in Mean and Standard Deviation decrease relative to the Mean and Standard Deviation of the population.

True

False

40. Following the completion of a LSS project the Belt not only creates a Control Plan he also develops a _____________ so those involved in the process know what to do when the critical metrics move out of spec.

Response Plan

Call List

Chain-of-Command

Defect Analysis Plan

Page 5 of 9

41. If the results from a Hypothesis Test are located in the "Region of Doubt" area, what can be concluded?

Rejection of the Alpha

We fail to reject the Null Hypothesis

The test was conducted improperly

We reject the Null Hypothesis

42. Contingency Tables are used to test for association, or dependency, between two or more classifications.

True

False

43. The Lean toolbox includes all of these items except ________________.

Mistake Proofing

Visual Factory

Design of Experiments

Inventory Management

44. At the very initiation of a project a Belt must develop a concise _______________ that states at a high level the area of concern and why it is important this issue be improved.

Business Case

Project Doctrine

Management Justification

Process Owner Disclosure

45. The relationship between a response variable and one or more independent variables is investigated and modeled by use of __________________.

X-Y Matrix

Baldridge Assessment

Analysis of Variance (ANOVA)

Critical X's Definition

46. Which statement(s) are incorrect about Fractional Factorial Designs?

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

Quarter Fractional experiments can exist for those with 4 factors

Resolution V design is desired while controlling costs of experimentation

Half Fractional experiments do not exist for those designs with only 2 factors

47. A valid Multiple Linear Regression (MLR) is characterized by all of these except?

It is an assumption that the X’s (inputs) are not correlated to each other

The X’s (inputs) are assumed to be independent of each other

The Residuals from MLR analysis have to be Normally Distributed

MLR is conducted based on a deliberate form of experimentation

It is not possible to evaluate interactions in a MLR analysis

48. 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.

True

False

49. 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) ________.

FMEA

SIPOC

X-Y Diagram

Team Charter

50. Kanban establishes a means of monitoring production, conveyance and delivery information such that efficient flow is established. The method used by Kanban is to require a _________ before anything moves.

Sign-off

Signal

Bell to ring

Work order

Page 6 of 9

51. In a Fishbone Diagram the 6M’s stand for Methods, Measurements, Machine, Man, Mother Nature and ____________ .

Management

Merger

Materials

Medical

52. When one speaks of 20% of something contributing 80% of the affect they are referring to what is known as the _________________.

Shewhart Example

Connection Principle

Balance Equation

Pareto Principle

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

Uncommon

Ordinary

Special

Selective

54. Much of the Six Sigma methodology is used to identify and remove causes for _____________ .

Process Variation

Material Costs

Excess Inventory

Lost Sales

55. From the variance F-test shown above, which of these conclusions is/are valid?

The variance between the class score distribution is significantly different

The variance between the class score distribution is not significantly different

This test applies only to Normal Distributed data at 99 % confidence

This test applies only to Non-normal Data at 99 % confidence

There are not enough data points to make any statistical conclusions

56. “A calculated time frame that matches customer demand” is a definition of what Lean Principles term?

Value Stream

Kaizen event

Takt time

Kanban

57. 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.

Nominal

Ratio

Ordinal

Interval

58. A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $2,800 in order to stay within budget. Using a sample of 55 first article components, a Mean of the new product upgrade price of $2,240 and a Standard Deviation of $120 was estimated.

Based on the data provided, the Z value for the data assuming a Normal Distribution is?

2.33

4.67

6.48

8.28

59. In a Fishbone Diagram the 6M’s stand for Methods, ____________, Machine, Man, Mother Nature and Materials.

Measurements

Merger

Management

Medical

60. A(n) ________________ has occurred when two inputs have a greater impact on a change in the output than either of the inputs has by itself.

Dependency

Bimodal reaction

Interaction

Amplified effect

Page 7 of 9

61. An ANOVA used across many dependent variables could increase the Beta risk.

True

False

62. Which statement(s) are correct about the Regression shown here? (Note: There are 2 correct answers).

The dependent variable is the outside temperature

The relationship between outside temperature and number of customers per hour is a Linear Regression

The dashed lines indicate with 95% confidence where all of the process data should fall between

The dashed lines indicate with 95% confidence the estimate for the Quadratic Regression Line

The predicted number of customers per hour is close to 5 if the outside temperature is 10 deg C

63. A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. Select the answer that best states the Practical

Problem.

If the average cost per component is $4,200 or less, then the purchase manager will introduce the new product upgrade with new components

If the average cost per component is greater than $4,200, then the purchase manager will introduce the new product upgrade with new components

Only if the average cost per product upgrade is $4,060, will the purchase manager introduce new product upgrades with new components

If the average cost per new product upgrade is less than $180, then the purchase manager will introduce the new product upgrade with new components

64. Cost of Poor Quality (COPQ) can be classified as Visible Costs and Hidden Costs. All these items are Hidden Cost except __________________.

Lost Customer Loyalty

Returns

Time Value of Money

Late Delivery

65. When a Belt conducts a Linear Correlation Analysis and finds that as an X increases the Y also increase then he has proven a ______________ correlation.

Negative

Positive

Monomial

Single alignment

66. The Greek letter “sigma” is used by mathematicians to signify _____________.

Curve Width

Numerical Average

Standard Deviation

Data Spread

67. The reported Cpk for a process with an average of 98 units, a spread of 16 units and upper and lower specification limits of 115 and 90 units would be?

0.5

0.75

1.00

1.25

68. Relative to a Design of Experiments the term Collinear refers to variables being a ________________ of each other.

Linear combination

Directly parallel

Mirror image

None of the above

69. The primary objective in removal of waste is to improve the Order Production Cycle where the time from _________________ to the time of receipt of payment is compressed.

Shift start

Product development

Receipt of an order

New fiscal year

70. The validity of the decision made with Hypothesis Testing is dependent upon all of the following except ______________________.

Beta risk

Range of data

Alpha risk

Sample size

Page 8 of 9

71. A(n) ______________ is best used to compare a Machine 1 average quality characteristic to the same quality characteristic of Machine 2.

F test

1-Sample t-test

2-Sample t-test

ANOVA test

72. Which of these are examples of business metrics or Key Performance Indicators commonly referred to as KPI’s?

Cycle Time

Defects

No. of Units Reworked

Labor Hours

All of these answers are correct

73. Which statements are correct about the advanced Capability Analysis shown here? (Note: There are 3 correct answers).

This is a Poisson Capability Analysis

The average DPU with 95% confidence is between 0.024 and 0.0295

The DPU does not seem to vary depending on sample size

The process shows only one instance of being out of control statistically so we have confidence in the estimated DPU of this process

The maximum DPU in one observation was nearly 0.0753

74. Using this partial Z Table, how many units from a month’s production run are expected to not satisfy customer requirements for the following process?

Upper specification limit: 7.2 Lower specification limit: 4.3 Mean of the process: 5.9 Standard Deviation: 0.65 Monthly production: 450 units

75. An operator checks that all boxes being packed contain enough products to fill the box. However, each box getting filled has a different number of products in it. This is a Reproducibility problem, not a Repeatability problem.

True

False

76. 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 _______________.

Soft Savings

COPQ efficiency

Median Savings

Hard Savings

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

Xbar Chart

Time Series Chart

Neither

Both

78. Statistical Difference is the magnitude of difference or change required to distinguish between a true difference, brought about by change or improvement, and one that could have occurred by chance.

True

False

79. Which statement(s) are correct about the Factorial Plot shown here? (Note: There are 3 correct answers).

When the cutting speed increased from low to high level, the tool age increases

The coefficient of the metal hardness is positively related to the output of tool age

The coded coefficient is lower for cutting speed than the cutting angle related to the output of tool age

These plots prove a statistically significance factor with 95% confidence

These plots are an example of interaction plots

80. From the variance F-test shown above, which of these conclusions is/are valid?

The variance between the class score distribution is not significantly different

This test applies only to Normal Distributed data at 99 % confidence

The variance between the class score distribution is significantly different

There are not enough data points to make any statistical conclusions

Page 9 of 9

81. If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement is incorrect?

The Experimental Design is half-fractional

The Main Effects are confounded with only 4-way interactions

The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions are confounded with the 3-way interactions

The experiment has 8 experimental runs with the first factor at the high level

82. Fractional Factorial designs are used to reduce the time and cost of experiments because the ____________ has been lowered.

Number of data measurement points

Number of runs

People involved

Output summary

83. Handling of warranty returns, process improvement team meetings and rework to meet customer expectations are all examples of business costs that are classified as ___________ .

Nuisance

Non-value Add

Necessary

Unavoidable

84. Which of these items contribute to what is necessary for successful Kaizen events?

Analysis tools

Management support

Operator support

All of these answers are correct

85. A valid mathematical Regression represents all of the characteristics shown except _________________.

All of the standardized residuals will be within ±3 Standard Deviations

The sum of the residuals is zero

The residuals when plotted follow a Normal Distribution

Most standardized residuals are within ±2 Standard Deviations

The Residual is equal to the difference between the observed and predicted values

86. 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.

Correlation Analysis

Gage R & R

Bimodal

Dual Attribute

87. Kaizens or Kaikakus and Six Sigma projects are intended to create incremental process improvements versus breakthrough, significant improvements.

True

False

88. The distance between the Mean of a data set and the Point of Inflection on a Normal curve is called the _______________.

Curve Spread

Standard Deviation

Numerical Average

Data Breadth

89. Review the analysis shown here.

Which statements are true about the process? (Note: There are 3 correct answers).

The initial focus for this project would be to determine why the thicknesses are so frequently too low

The majority of the process is closer to the lower specification limit

This process is described with the Weibull Distribution

The process has more problems with Variation than Centering

The process follows a non-normal distribution with the given data

90. The calculation of Column Total times Row Total divided by Grand Total yields expected values from what type of chart?

Pareto Chart

Sakami Table

Contingency Table

None

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How To Pass Six Sigma Black Belt Certification CSSBB Exam?

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