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GAQM CLSSBB Certified Lean Six Sigma Black Belt (CLSSBB) Exam Practice Test

Demo: 52 questions
Total 227 questions

Certified Lean Six Sigma Black Belt (CLSSBB) Questions and Answers

Question 1

When a team consists of five black belts and eight quality engineers, how many unique meetings could be held consisting of one black belt and two quality engineers?

Options:

A.

40

B.

80

C.

140

D.

280

Question 2

Benchmarking is difficult to perform on processes that

Options:

A.

can be identified and researched easily

B.

are practiced in many different industries

C.

have a major impact on the success of the business

D.

have not been documented

Question 3

The temperature in a storage location is logged once every 30 minutes. The control chart that is appropriate for displaying these values is:

Options:

A.

x-bar and R

B.

median

C.

individual and moving range

D.

p

E.

np

F.

u

G.

c

Question 4

A full factorial experiment has three factors. Each factor has three levels. The number of test combinations or runs is:

Options:

A.

9

B.

6

C.

27

D.

36

E.

33

Question 5

The following is a set of individual measurements:

3 5 4 5 6 3 4 3 2 4 5 6 5 7 6 4 5 5 8 7 6 6 7 7 4

Find the control limits for the individuals chart.

Options:

A.

.7 and 11.2

B.

1.6 and 8.6

C.

2.7 and 7.5

D.

none of the above

Question 6

Which of the following techniques can be used in regression analysis to reduce higher-order terms in the model?

Options:

A.

Large samples

B.

Dummy variables

C.

Transformations

D.

Blocking

Question 7

The Pareto Principle is associated with 80:20 ratios? (True/False)

Options:

A.

True

B.

False

Question 8

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

Options:

A.

The problem must be defined

B.

Relevant data must be gathered

C.

The measurement system must be validated

D.

The process must be mapped

Question 9

This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 11?

Options:

A.

B.

C.

D.

none of the above

Question 10

What is the value of the test statistic?

Options:

A.

0.898

B.

1.251

C.

0.429

D.

3.57

E.

none of the above

Question 11

Which of the following is an element of standard work?

Options:

A.

Takt time

B.

Product cost

C.

Product value

D.

Maximum inventory

Question 12

Find the mean, median and mode of the following data set:

9, 11, 12, 12, 14, 18, 18, 18, 20, 23:

Options:

A.

15.5, 18, 18

B.

15, 14, 18

C.

14, 16, 18

D.

15, 12, 18

E.

15.5, 16, 18

Question 13

At a particular time, three components are in series and each has a reliability of 0.98. What is the reliability of the system?

Options:

A.

0.98

B.

0.94

C.

0.37

D.

0.26

E.

none of the above

Question 14

The area under the curve value is 1, then the mean, median and mode values would be same (True/False)

Options:

A.

True

B.

False

Question 15

At a particular time, three components are in parallel and each has a reliability of 0.98. What is the reliability of the system?

Options:

A.

0.98

B.

0.94

C.

0.37

D.

0.26

E.

none of the above

Question 16

Which of the following is not one of the Lean R’s?

Options:

A.

Restart

B.

Remanufacture

C.

Redesign

D.

Recover

Question 17

Cost of quality includes the following except________

Options:

A.

Cost of Appraisal

B.

Cost of Prevention

C.

Cost of Change management and external consultancy

D.

Cost of failures

Question 18

Following have been exponents of Quality evolution except?

Options:

A.

Juran

B.

Philip Crossby

C.

Wockhardt

D.

Deming

Question 19

One characteristic of attributes data is that they are always

Options:

A.

continuous

B.

discrete

C.

expensive to collect

D.

read from a scale of measurement

Question 20

This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 15?

Options:

A.

B.

C.

D.

none of the above

Question 21

In an experimental design context, replication refers to:

Options:

A.

duplicating experimental results at another location

B.

repeating a test with the same factor levels

C.

obtaining the same or similar results from different factors

D.

repeating an experiment but using at least one different factor level

Question 22

Which of the following measures is increased when process performance is improved?

Options:

A.

Variability range

B.

Capability index

C.

Repeatability index

D.

Specification limits

Question 23

If it is desirable to maximize the response R, the following levels should be used:

Options:

A.

A+ and B+

B.

A+ and B–

C.

A– and B+

D.

A– and B–

E.

none of the above

Question 24

One of the approaches used by TRIZ is referred to as “removing the contradiction.” A project team is asked to determine how many coats of paint should be applied to a panel. In this case the contradiction is:

Options:

A.

additional coats cost money but give a better finish

B.

the customer wants an excellent finish at a low cost

C.

the company wants to reduce costs but have an excellent finish

Question 25

A complex system has many causes and effects. These may be illustrated on which of the following:

Options:

A.

matrix diagram

B.

cause and effect diagram

C.

process decision program chart

D.

affinity diagram

E.

activity network diagram

F.

tree diagram

G.

prioritization matrix

Question 26

A team wants to make a schedule for a project showing which tasks must be done sequentially and which may be done simultaneously. Which tool is most appropriate?

Options:

A.

matrix diagram

B.

cause and effect diagram

C.

process decision program chart

D.

affinity diagram

E.

activity network diagram

F.

tree diagram

G.

prioritization matrix

Question 27

A stable, normally distributed process with specification 3.50 .03 has = 3.51 and = .016. What percent of the production violates specification?

Options:

A.

16.43%

B.

12.62%

C.

18.58%

D.

11.18%

Question 28

The primary metric for a project is reduced cost for process A. Baseline data might include:

Options:

A.

current maintenance costs

B.

current selling price for the products or services output by process A

C.

current suggestions from stakeholders of process A

D.

all the above

E.

none of the above

Question 29

(Refer to the previous problem) The variance of the five replications for each run is calculated. Most of these variances are approximately equal but two are significantly lower than the others. The experimenters would be especially interested in those two runs if they want to optimize:

Options:

A.

dissolution time

B.

interactions

C.

main effects

D.

robustness

E.

degrees of freedom

Question 30

This table displays the inventory of fasteners in a storage cabinet. A bolt is selected at random from the fastener cabinet. Find the approximate probability it is size 7/8.

Options:

A.

11

B.

.08

C.

.09

D.

.30

E.

none of the above

Question 31

Perform a risk analysis to determine the expected profit or (loss) from a project which has four possible disjoint outcomes:

Outcome A shows a profit of $340,000 and has a probability of 0.25.

Outcome B shows a profit of $120,000 and has a probability of 0.40.

Outcome C shows a loss of $40,000 and has a probability of 0.10.

Outcome D shows a profit of $100,000 and has a probability of 0.25.

Options:

A.

$130,000

B.

$520,000

C.

$154,000

D.

($168,000)

E.

none of the above

Question 32

A population of size 1,000,000 has mean 42 and standard deviation 6. Sixty random samples, each of size 15 are selected. According to the Central Limit Theorem the distribution of the sixty sample means has a standard deviation of approximately:

Options:

A.

6

B.

6/42

C.

6/15

D.

6/ 15

E.

none of the above

Question 33

In a resolution III fractional factorial experimental design, main effects are confounded with:

Options:

A.

one factor interactions

B.

two factor and higher interactions

C.

three factor and higher interactions

D.

no other effects

Question 34

There are 14 different defects that can occur on a completed time card. The payroll department collects 328 cards and finds a total of 87 defects. DPMO =:

Options:

A.

87 ÷ 328

B.

87 ÷ (328 × 14)

C.

14 ÷ 87

D.

87 ÷ 14 × 1,000,000

E.

328 ÷ 87

F.

87 × 1,000,000 ÷ (14 × 328)

Question 35

P(A) = .42, P(B) = .58, P(A&B) = .10. Find P(A or B).

Options:

A.

.90

B.

1.00

C.

.24

D.

none of the above

Question 36

This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet. Find the approximate probability it is size 3/4.

Options:

A.

.85

B.

.185

C.

.03

D.

.11

E.

none of the above

Question 37

According to the Central Limit Theorem:

Options:

A.

the median and the mean have the same value in a symmetric distribution

B.

the mode of a normal distribution is also the mean

C.

the mean of an exponential distribution is smaller than the median

D.

the mean, median and mode of a normal distribution all have the same value

E.

none of the above

Question 38

The following data were collected on the diameters of turned shafts: 2.506 2.508 2.505 2.505. These values are:

I. Attribute data

II. Discrete data

III. Variables data

IV. Continuous data

Options:

A.

I and II A stable, normally distributed process with specification 3.50 .03 has = = .016. What percent of the production violates specification?

B.

I only

C.

II only

D.

I and IV

E.

III and IV

Question 39

The average weight of castings produced at the Nebraska foundry is 3.7 lbs. A new supplier from Kansas has submitted a batch of castings known to have normally distributed weights. A random sample of 10 has an average weight of 3.6 lbs. and standard deviation 0.06 lbs. Do these data indicate that the Kansas foundry produce lighter castings on average?

Options:

A.

yes

B.

no

Question 40

The team in the above problem draws arrows from Post-It® notes that are causes to notes that are the effects of these causes. This step is best described by which approach to problem solving?

Options:

A.

Affinity diagram

B.

Inter-relationship digraph

C.

Tree diagram

D.

Process decision program chart

E.

Matrix diagram

F.

Prioritization matrix

G.

Activity network diagram

Question 41

If the probability that event A occurs is 0.51, the probability that event B occurs is 0.64 and events A and B are statistically independent then:

Options:

A.

A and B are mutually exclusive

B.

the probability that both A and B occur is 0.3264

C.

A and B can’t both occur

D.

the probability that A occurs is 1-(probability that B occurs)

E.

A and B have different standard deviations

Question 42

The management team in the above problem assigns each goal a numerical value designating its importance. The “bulls eyes,” circles and triangles are replaced by the values 3, 2 and 1 respectively. Entries are made in each box by multiplying the 3, 2 or 1 by the goal value.

The importance of each activity is calculated by adding the entries in its row.

Options:

A.

Affinity diagram

B.

Inter-relationship digraph

C.

Tree diagram

D.

Process decision program chart

E.

Matrix diagram

F.

Prioritization matrix

Question 43

Causes in a cause and effect diagram often include management, measurement systems, mother nature and the four standard causes:

Options:

A.

man, material, methods, machines

B.

man, manufacturing, methods, material

C.

marketing, methods, material, machines

D.

man, material, millennium, machines

E.

none of the above

Question 44

A quality engineer employed by a hospital is asked to improve the process of medication storage in locked cabinets near patient doors. One defect that occurs rarely is that the medication caddy is left out when the cabinet is relocked. The engineer installs a gravity activated arm that will not permit the door to close when the caddy isn’t inside.

This improvement is best described by which approach to problem solving?

Options:

A.

5S

B.

Poka yoke

C.

Kaizen

D.

PDCA

E.

Re-engineering

Question 45

A team wants a technique for improving consistency of assembly operations. They should use:

Options:

A.

written and diagrammed work instructions

B.

flow charts and process maps

C.

cause and effect diagrams

D.

Pareto chart

E.

relationship matrix

Question 46

George is an employee of Black, Inc. John is George’s internal customer. Which statement is true?

Options:

A.

John is employed by Black, Inc.

B.

John is employed by another company that supplies material to Black, Inc.

C.

John is employed by a company that purchases material from black, Inc.

D.

John is employed by another company that has a fiduciary agreement with Black, Inc.

E.

John is employed by another company as an internal auditor.

Question 47

Intuitively, which factor A or B seems most likely to be significant?

Options:

A.

A

B.

B

C.

C

D.

neither

E.

both about equally significant

Question 48

A medicine with efficacy of .52 is given to five patients. Find the approximate probability that at least one of the patients is cured. (Hint: Use the binomial formula.)

Options:

A.

.975

B.

.480

C.

.531

D.

.416

E.

none of the above

Question 49

A team wants a technique for displaying the connection between various customer needs and various features on a product. They should use:

Options:

A.

written and diagrammed work instructions

B.

flow charts and process maps

C.

cause and effect diagrams

D.

Pareto chart

E.

relationship matrix

Question 50

Calculate the main effect of factor A (i. e. A+ – A– ).

Options:

A.

46

B.

129

C.

83

D.

–46

E.

none of the above

Question 51

This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet.

Find the approximate probability it is a 1/2 inch bolt.

Options:

A.

.65

B.

.30

C.

.09

D.

.35

E.

none of the above

Question 52

The principle disadvantage of fractional factorial experiments is that:

Options:

A.

experimental error is high

B.

robustness is compromised

C.

effects are confounded

D.

measurements are less precise

E.

analysis is more difficult

Demo: 52 questions
Total 227 questions