Black Belt Exam

Question 1 of 100

1. Question

5 ‘S’ does not include

Show-casing

Sorting

Standardizing

Shining

Question 2 of 100

2. Question

A Black Belt is asked to check if the cycle time of transaction processes in his organization are dependent on location. The organization has 2 offices, one in London and another in Dubai. He collects data on cycle time for these two locations. Which test he will use to find if location is a vital X?

Anova or 2-t test

Correlation or regression

2 proportion or Chi Square

FMEA

Question 3 of 100

3. Question

A black belt would use non-parametric statistical methods when

knowledge of the underlying distribution of the population is limited

The measurement scale is either nominal or ordinal

The statistical estimation is required to have higher assurance

Management requires substantial statistical analysis prior to implementing

Question 4 of 100

4. Question

A useful tool to uncover potential failures to initiate commensurate preventive actions

FMEA

QFD

Control Chart

Six Sigma

Question 5 of 100

5. Question

A “MACRO” level process map developed in Define phase.

SIPOC

As-Is Process map

To-Be Process map

Should Be process map

Question 6 of 100

6. Question

Cause and Effect or ISHIKAWA Diagrams are also known as

Fishbone diagrams

PDCA

Tree diagrams

Storyboarding

Question 7 of 100

7. Question

DMAIC methodology is used to

Reduce variation

Reduce waste

Reduce People

All of the above

Question 8 of 100

8. Question

If you are plotting defects with same sample size (constant area of opportunity), following control chart can be used

c chart

u chart

p chart

np chart

Question 9 of 100

9. Question

In a Pareto Chart, the line connecting cumulative points is

Ascending

Descending

Vertical

Horizontal

Question 10 of 100

10. Question

In multiple regression, if R Squared Adjusted decreases after adding a term, it means

Added term has no incremental value and should be removed

R Squared has been adjusted by decreasing it

R Squared cannot be adjusted

Regression cannot be performed

Question 11 of 100

11. Question

In order for a problem to be solved correctly, which of the following must occur first ?

The problem must be defined

Relevant data must be gathered

The measurement system must be validated

The process must be mapped

Question 12 of 100

12. Question

In regression, if the residual plots are not normally distributed, it implies

The Model needs to be refined

P value is low

Non-parametric tests should be used

No outliers in the data

Question 13 of 100

13. Question

It is believed that 40% of the Black Belts in the world today are working in services industry. Which test would you use to test the hypothesis if you collected 200 random samples of Black Belts and found 83 of them are in services industry?

1 proportion

2 proportion

ANOVA

Chi-Square

Question 14 of 100

14. Question

Scatter diagram depicts

Possible relationships between two variables

Factors that have significance for an organization in terms of efficiency, costs, time etc.

The movement of people, materials, documents or information in a process

Factors that are believed to affect a production problem or desired outcome

Question 15 of 100

15. Question

Selecting right projects is key to Six Sigma success

Yes

No

Cannot Say

There is no relationship between the two

Question 16 of 100

16. Question

Square Root Of Variance is __________

Standard Deviation

Mean

Mode

Range

Question 17 of 100

17. Question

The first step in getting started with process improvement is?

Put people in teams

Use problem-solving techniques

Empowerment

Training

Question 18 of 100

18. Question

The hypotheses test used to test if a particular distribution model is good to fit for a population is

Chi-Square test

P test

T test

Regression

Question 19 of 100

19. Question

The prime use of a control chart is to_____

Detect assignable variation in the process

Detect nonconforming product

Measure the performance of all quality characteristics of a process

Detect the presence of random variation in the process

Question 20 of 100

20. Question

What is the graphical tool used to analyze continuous Y and attribute X

Box Plot

Scatter plot

Pareto

Normal probability plot

Question 21 of 100

21. Question

When two independent variables are correlated, the condition is known as

Multicollinearity

Linearity

Scattering

Regression

Question 22 of 100

22. Question

Which among is not an example of Visual Controls

Scatter diagram

Indicator boards

Kanban cards

Signal lights

Question 23 of 100

23. Question

A green belt is going to monitor the process by collecting 7 samples per group. Which of the following control charts would be most appropriate ?

I-MR

Xbar R

X bar S

p Chart

Question 24 of 100

24. Question

A project can stop in Measure Phase when

Black belt finds that project will take too long to collect data

Measurement system is faulty and rectifying it will improve the sigma level to desired goal

Data cannot be collected in measure phase

Training is not conducted after measure phase

Question 25 of 100

25. Question

A unit having one or more defects

Error

Defective

DPMO

Opportunity

Question 26 of 100

26. Question

A very useful attribute control chart for plotting the actual number of defectives found during an inspection (same sample size) is known as the

X-bar and R chart

np chart

p chart

c chart

Question 27 of 100

27. Question

After running some statistical tests, an analyst found that the P-value was greater then 0.05 which indicated:

There is a difference or relationship with at least 95% confidence

There is no difference or relationship with at least 95% confidence

To reject the Null Hypothesis with a least 95% confidence

To change the Null Hypothesis

Question 28 of 100

28. Question

An organized disciplined approach that focuses on developing and delivering the near perfect products and services in Six Sigma:

SIPOC

DMAIC

DPMO

PDCA

Question 29 of 100

29. Question

ANOVA is used to

Compare means of two or more levels of responses (Ys)

Compare means of two or more levels of factor (Xs)

Compare variances of two or more factors (Xs)

Compare variances of two or more levels of factor (X)

Question 30 of 100

30. Question

If level or significance (alpha) or type I error is 5%, what is the confidence level?

5%

95%

Between 0% and 5%

Cannot be calculated with the given data

Question 31 of 100

31. Question

If, in a t-test, alpha is .05. Therefore:

5% of the time we will say that there is no real difference, but in reality there is a difference

5% of the time we will say that there is a real difference when there really is not a difference

95% of the time we will make an incorrect inference

95% of the time the null hypothesis will be correct

Question 32 of 100

32. Question

In a control chart, control limits are.

Analogous to specifications

Calculated using sigma value

Set by customer or management

None of the above

Question 33 of 100

33. Question

In a hypothesis test, the Minitab output of p value = 0.65. If the level of significance (Alpha) is 0.05, then which of the statements is true

Null Hypothesis is accepted with 90% confidence

Null Hypothesis is accepted with 95% confidence

Null Hypotheses can be accepted or rejected based on what null hypothesis is.

The probability of going wrong about the conclusion is 0.65 based on the data collected

Question 34 of 100

34. Question

In Y=f(x), X represents the _____ of the process and Y the _____ of the process.

Output, Input

Input, Output

Mean, standard Deviation

None of the above

Question 35 of 100

35. Question

One characteristic of attributes data is that it is always______

Continuous

Without decimal

Expensive to collect

Read from a scale of measurement

Question 36 of 100

36. Question

Scatter diagrams are used to determine a relationship between

Attribubte and continuous variables

Two continuous variable

Attribute and Attribute variable

None of the above

Question 37 of 100

37. Question

Sigma “s” represents…

the Alpha Risk.

the Standard Deviation

the Beta Risk.

The Mean

Question 38 of 100

38. Question

Six Sigma Methodology to design a new process is called

DMAIC

DFSS using DMADV

QFD

FMEA

Question 39 of 100

39. Question

SPC stands for.

Standard process center

Statistical process control

Standard process control

Statistical process center

Question 40 of 100

40. Question

The first benefit that flowcharts provide is

Identify wasteful steps

Increase understanding of what is taking place

Identify redundancies

To assist with ISO compliance

Question 41 of 100

41. Question

The first step in creating a Pareto Chart manually is

Determining the Vital Many

Sorting data frequencies in descending order

Perform ABC analysis

To employ the 80-20 rule

Question 42 of 100

42. Question

The measure of dispersion (spread or variation) is

Median

Standard Deviation

Mode

Mean

Question 43 of 100

43. Question

The process sigma of a production process producing 308,000 defects per million opportunities would be

3.08

2

2.08

1.9

Question 44 of 100

44. Question

The SIPOC business model helps everyone in the company see the business from an overall process perspective by I. Providing a framework to link inputs and outputs of processes II. Identifying the few key business customers III. Identifying the hypothesis tests to be used IV. Helping to have process approach in Define phase itself

I, II and III only

I, II and IV only

I, III and IV only

II, III and IV only

Question 45 of 100

45. Question

Variation that is unexpected is called

Special

Un Assignable

Hard to avoid

Common

Question 46 of 100

46. Question

VIF calculated duration regression studies is known as

Variable Influence Factor

Variance Inflation Factor

Variance Important Factor

Variable Inflation Factor

Question 47 of 100

47. Question

What is the number one rule of brainstorming that is most frequently violated is

Wrong technique used

Discussion and evaluation of ideas

Not giving sufficient time

Scribe writes too slowly

Question 48 of 100

48. Question

When interested in seeing the pattern of data, a ____________ should be used?

FMEA

Histogram

both of the above

none of the above

Question 49 of 100

49. Question

Which Hypotheses test can be used to test if two attribute variables are related

Paired t test

Chi-Square Test

Regression

ANOVA

Question 50 of 100

50. Question

Which is not a Lean tool?

MUDA (Waste)

FMEA

MURA (Variation)

MURE (Over Burden)

Question 51 of 100

51. Question

A Black Belt is attempting to find if there exists a correlation between cycle time of transaction (Say, billing cycle time) and the shift. The organization has 3 shifts – Morning, Evening and Night. Which is the best test to use to prove that shifts are the key factor?

Regression

T test

ANOVA

Chi Square

Question 52 of 100

52. Question

A black belt plans to test the performance of workers before and after training. Which of the following hypothesis tests should be used to determine whether the training actually improved the workers performance?

1-sample z test

2-sample t test

Paired t test

Chi- square test

Question 53 of 100

53. Question

A rotating brainstorming approach in which brainstorming ideas are shared and expanded upon is

Brain writing

Affinity Diagrams

6-3-5 Technique

None of the above

Question 54 of 100

54. Question

A study of basic statistics requires us to consider which of the following

Measure of location (Mean)

Measure of spread (Standard deviation)

Both of the above

None of the above

Question 55 of 100

55. Question

Determine the Mode for the following data set: 2 3 2 1 0 0 4 6 2 1 3 4 4 4 4

2

0

4

6

Question 56 of 100

56. Question

Fool proofing (Japanese) is known as

PILOTING

Brain storming

Poka Yoke

None of the above

Question 57 of 100

57. Question

In Anderson Darling Normality test in Minitab, a p value of greater than 0.05 means

The data may not be normal

The data may be normal

It can be stated with 95% confidence that the data is normal

There is a 5% chance that data is normal

Question 58 of 100

58. Question

MINITAB is a?

Statistical methodology

Quality initiative

Statistical data analysis software

None of the above

Question 59 of 100

59. Question

People who are directly affected by the project are know as

Suppliers

Government

Stakeholders

Statisticians

Question 60 of 100

60. Question

Poka Yoke was developed by

William Edward Deming

Taiichi Ohno

Shigeo Shingo

Genichi Taguchi

Question 61 of 100

61. Question

RPN in FMEA stands for.

Random Priority Number

Restricted Priority Number

Risk Priority Number

Relative Priority Number

Question 62 of 100

62. Question

SIPOC stand for

Solve Input Process Owner Customer

Solution Input People Output Caring

Supplier Input Process Output Customer

Supplier Internal Process Owner Customer

Question 63 of 100

63. Question

Six Sigma Methodology introduce by the company name

Toyota

Ford

Motorola

GE

Question 64 of 100

64. Question

The basic elements of Cause and Effect Diagrams include all of the following except.

Methods

Machinery

Money

Measurements

Question 65 of 100

65. Question

The MAIN objective of doing VA and NVA analysis or identification of waste (Muda) after process mapping (or Value Stream mapping in Lean) is to

Describe NVAs or Muda

Know about NVAs or Muda

Reduce / eliminate NVAs or Muda

Reduce variation

Question 66 of 100

66. Question

The Manager of the process claims that he suspects that the time to process an order is dependent on the experience of the process executives, which is continuous but not normal. Which hypothesis is appropriate to test his claim

T-test

ANOVA

Mood median

Regression

Question 67 of 100

67. Question

The median for the following numbers (6, 3, 2, 5, 1, 8,7) is _____

3

4

5

6

Question 68 of 100

68. Question

The primary objective of a process is to achieve _____

Efficiency

Low Cost

Customer Satisfaction through efficiency

Throughput

Question 69 of 100

69. Question

The primary reason that most companies implement six sigma is to

Show number of Black belts and Green Belts on their rolls to the clients

Improve employee satisfaction

Improve profits

Present it on annual report

Question 70 of 100

70. Question

The purpose of brainstorming is to

Use structured process management thinking

Satisfy stakeholders

Generate ideas

eliminate waste

Question 71 of 100

71. Question

The Scope in the project charter refers to

Authority of Black Belt

Authorities of Process Owner

Which areas in the process are concerned with the project

How many bones the fishbone diagram will have

Question 72 of 100

72. Question

Two variables, x and y, are related in that x increases or decreases with y. which of the following could best be used to depict this relationship?

A control chart

A pareto chart

A scatter diagram

An interrelationship diagram

Question 73 of 100

73. Question

Using Six Sigma methodology, a company at 4 sigma would have a failure rate of.

308,000 ppm

233 ppm

6210 ppm

66,807 ppm

Question 74 of 100

74. Question

What is NOT a goal of Six Sigma?

Customer satisfaction

Reduce the number of defects

Balance the corporate budget

Benefits to Organization

Question 75 of 100

75. Question

When the Process Sigma is equal to 6 the no. of defects per million measures to ____

2.1

1

3.4

3.9

Question 76 of 100

76. Question

6-3-5 stands for

6 Ideas 3 Min 5 People

6 People 3 Min 5 Ideas

6 Min 3 People 5 Ideas

6 People 3 Ideas 5 Min

Question 77 of 100

77. Question

A benefit of Cause and effect Diagrams is

Facilitates root cause analysis

Sensitizing people to all the possibilities of defects

Provides a visual of the problem being studied

All of the above

Question 78 of 100

78. Question

A Black Belt is going to monitor the number of defectives on different size samples. Which of the following control charts would be most appropriate?

u

np

c

p

Question 79 of 100

79. Question

A flowchart helps to

Understand the scope of a process

Identify process steps

Identify VA and NVA at later stage

All of the above

Question 80 of 100

80. Question

A standard normal curve has Mean = _____-and standard deviation = ________

3, 1

0, 3

1, 3

0, 1

Question 81 of 100

81. Question

Benchmarking is concerned with finding and comparing organization’s processes to

Competitor processes

Dissimilar organization processes

Other organization processes

All of the above

Question 82 of 100

82. Question

CTQ stands for?

Criticize the quantity

Criticize the quality

Critical to Quantity

Critical to Quality

Question 83 of 100

83. Question

Difference between the 75th percentile and the 25th percentile in a Box Plot is called

Outliers

Median

Mode

Interquartile Range

Question 84 of 100

84. Question

For a normal distribution, three standard deviations on each side of the mean would include ‘approximately’ what percentage of the total population?

47%

68%

95%

99%

Question 85 of 100

85. Question

If severity =5, Occurrence = 4, Detectability = 2, what is RPN ?

20

8

10

40

Question 86 of 100

86. Question

In FMEA, ________ is easier to control, but ________ is better to control

Severity, Occurrence

Occurrence, detection

Severity, Detection

Detection, Occurrence

Question 87 of 100

87. Question

Mistake Proofing principles involves

Elimnation

Replacement

Mitigation

all of the above

Question 88 of 100

88. Question

On a control chart, the lines plotted three standard deviations on either side of the centerline, or mean of data, define

Warning limit

Threshold limit

Tolerance limit

Control limit

Question 89 of 100

89. Question

Pilot should be always conducted

To see if the suggested improvements really make a difference

To satisfy and get buy-in from the stakeholders

Before making huge investments to make suggested changes

All of the above

Question 90 of 100

90. Question

Quality tools are used to _____

Demonstrate the knowledge of statistical tools

Satisfy champions

Complete project documentation

Focus on the process and identify issues to solve problems

Question 91 of 100

91. Question

SIPOC is also known as

High level process map

Macrolevel process map

AS-IS process Map

All of the above

Question 92 of 100

92. Question

The central tendency of a data distribution can be represented as.

Mean

Median

Mode

All of the above

Question 93 of 100

93. Question

The goal statement in a project charter should be

Measurable

Realistic

Time bound

all of the above

Question 94 of 100

94. Question

The origin of lean can be traced to

Motorola

Honeywell

GE

Toyota

Question 95 of 100

95. Question

The Pareto Principle suggests that importance is placed on ?

The vital many (80% of the significant factors)

The trivial many (80% of the insignificant factors)

The trivial few (20% of the insignificant factors)

The vital few (20% of the significant factors)

Question 96 of 100

96. Question

The samples which are collected to estimate the population parameters should

Represent the population

Be randomly selected

Be of appropriate size

All of the above

Question 97 of 100

97. Question

Those improvements and innovations that can be implemented via intuition are called

Easy Variables

Defects

Hypothesis tests

Low hanging fruits

Question 98 of 100

98. Question

Upper and Lower Specified limits from the customer are known as

Specification width

Specification limits

Tolerance

All of the above

Question 99 of 100

99. Question

What does Six Sigma stand for

An improvement philosophy

Customer Specifications away by Six Standard deviations from the mean

Approx 3.4 defects per million opportunities

All of the above

Question 100 of 100

100. Question

What is Repeatability and Reproducibility?

Ability to repeat and reproduce non-defective performance

Both are same type of problems with different names

Ability to repeat the reproducible defects

A type of measurement system problem

No. of Questions	Mark Of Each Question	Duration	Min Passing Percentage
100	1	120 min	40%

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