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Aug 16 2022 |
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Introduction

Introduction

This is the EXIN LSSA Lean Six Sigma Green Belt (LSSGB.EN) sample exam. The Rules and Regulations for EXIN’s examinations apply to this exam.

This exam consists of 60 multiple-choice questions. Each multiple-choice question has a number of possible answers, of which only one is correct.

The maximum number of points that can be obtained for this exam is 60. Each correct answer is worth 1 point. You need 38 points or more to pass the exam.

The time allowed for this exam is 180 minutes.

For this exam you are allowed to use an online calculator. This calculator can be found by clicking 'Navigator' and then 'Calculator'.

You are allowed to use the exam literature and Minitab for this exam.

Good luck!





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Question

1  of 60
What does a problem description identify?

Question

2  of 60
A team leader should give feedback to the team members.

What should he not do?

Question

3  of 60
In order to solve a problem correctly, which must occur first?

Question

4  of 60
A Lean Six Sigma project must be addressed in phases. The DMAIC roadmap is used to do this.

What do the letters D, M and A in this abbreviation stand for?

Question

5  of 60
Who is the right person to remove barriers arising in a Lean Six Sigma improvement project?

Question

6  of 60
What do Lean and Six Sigma not share?

Question

7  of 60
A company has just started a Lean Six Sigma initiative.

Which set of tools is the best to start with?

Question

8  of 60
What is the most important aspect of functional requirements?

Question

9  of 60
A study is to be carried out on a litter of puppies. Information about the first puppy has been captured:

Color: Brown and black
Coat: Long hair
Energy: High
Legs: 4
Weight: 15.5 kg
Height: 565 mm

The analyst has stated that statistics on the appearance of the puppies cannot be measured, because this type of data cannot be counted or measured.

Is this statement correct?

Question

10  of 60
If CpU is determined to be 2.0 and CpL is determined to be 1.0, what factual statement can be made about the process?

Question

11  of 60
What is the sum of squared deviations from the sample mean divided by n-1?

Question

12  of 60
Of a sample, all values are added together and this total is divided by the number of values.

What is the above the definition of?

Question

13  of 60
A supervisor asks employees to record the occurrences of ten different non-conformities. He is just interested in frequencies and wants to use a simple method.

Which method should he use?

Question

14  of 60
On a chicken farm, an automated egg inspector is used to sort out the eggs. The number of rejected eggs per 10 trays of 30 eggs is recorded.

What is this type of data called?

Question

15  of 60
What is the term for the value with the highest frequency in a data set?

Question

16  of 60
An inline automated test device tests every part on a production line. The output of the device is "accept" or "reject".

What is the name of this type of output data?

Question

17  of 60
A process engineer has developed a Process FMEA for a boiler assembly line. The following ratings were determined for a specific cause of an assembly failure:

Severity = 9
Occurrence = 2
Detection = 5

What is the risk priority number (RPN) for this cause/failure mode?

Question

18  of 60
There is a requirement for a Green Belt to perform a statistical test in order to demonstrate a difference in performance between two processes. The Belt states a null hypothesis and an alternative hypothesis. The Belt decides to use a confidence level (1- α) = 0.95, calculates the sample sizes needed and conducts the test. The calculated significance of the test statistic is p = 0.72.

Which should be the result of the statistical test and the conclusion about the processes?

Question

19  of 60
What is the purpose of a statistical test?

Question

20  of 60
Which graph is best suited to visualize the stability of a process?

Question

21  of 60
When performing an FMEA, what must a Belt do?

Question

22  of 60
In a variance analysis, the following is found:

- the adjusted sum of squares of the factor is 24 with 2 degrees of freedom
- the adjusted sum of squares of the error is 6 with 18 degrees of freedom.

What is the R-square of this model in percentage?

Question

23  of 60
What is the name of the procedure used to investigate two mutually exclusive statements about a population and in which information from a sample is used to make conclusions about the population?

Question

24  of 60
What is the probability that the null hypothesis is actually true?

Question

25  of 60
When a Belt calculates a statistic based on sample measurements as an estimate for a population parameter, the Belt can also calculate, with specified confidence, an upper and lower limit within which the true population parameter lies.

What is this called?

Question

26  of 60
Please read the Critical to Quality (CTQ) steps:

1. Add additional CTQ levels as needed
2. Identify the customer's needs
3. Identify the customers
4. Validate the requirements with the customer
5. Identify the customer's basic requirements

What is the appropriate time sequence to arrange these CTQs from start to finish?

Question

27  of 60
Which is not an effective analytical technique used to determine the root cause of a problem submitted for corrective action?

Question

28  of 60
Why is Design of Experiments (DOE) superior to the "One factor at a time" (OFAT) method?

Question

29  of 60
Which tool is not part of the 8-D problem-solving method?

Question

30  of 60
When a Belt runs a Design of Experiments (DOE), the experiment will show experimental error.

Which statement is true?

Question

31  of 60
After returning from a two-week vacation a manager reviewed the Xbar and R charts that were maintained during the manager’s absence. One of the Xbar charts shows the last 50 points to be very near the center line. In fact, they all seem to be within about one sigma of the center line.

What is the best explanation for this occurrence?

Question

32  of 60
At the early stages of the DMAIC project, the Voice of the Customer (VOC) shouted "safety" in every customer focus group, customer interview, and customer survey. The control plan addresses product performance in detail, but not product safety.

Should this control plan be implemented?

Question

33  of 60
Please see the following list:

1. Poka-yoke
2. 5S
3. TPM
4. Kanban

Which techniques support operational control?

Question

34  of 60
Please read the following statements:

1. Customer specifications can be used as control limits on control charts.
2. Control limits must reflect the process capability.
3. You cannot use control limits that are narrower than specification limits in the Control chart.

Which statements about Statistical Process Control (SPC) are true?

Question

35  of 60
Control chart rules are used to identify unusual events. Some rules indicate out-of-control situations.

Which rule gives a signal, but does not indicate an out-of-control situation?

Question

36  of 60
A Lean Six Sigma Black Belt is developing a control plan.

Which tool does not belong to such a plan?

Question

37  of 60
After installing a new production process, an employee reveals that there are Out-of-Control Action Plans (OCAPs) missing in the control plan.

Why are these OCAP's so important?

Question

38  of 60
Which control chart is normally used when monitoring the number of defects per standard unit?

Question

39  of 60
Which chart is used to monitor the number of defects per part?

Question

40  of 60
Please read the following characteristics:

1. Producing the right items
2. Delivering the right items
3. In the right amounts
4. At the right time

What are the characteristics of Just in time (JIT)?

Question

41  of 60
What is the most common technique used to reduce setup cycle time?

Question

42  of 60
Assume the following information:

Customer demand: 80,000 pcs per month
Working days: 21 days per month
Available: 2 shifts of 8 hours per day
Breaks: 1 hour per shift per day

What is the takt time?

Question

43  of 60
What needs to be done when the cycle time of a certain process step is far below takt time?

Question

44  of 60
Please read the following characteristics:

1. Easy process control
2. Only produce what is needed
3. Instant availability of the products
4. Avoids overproduction

Which characteristics belong to pull?

Question

45  of 60
When is an activity not value adding?

Question

46  of 60
A Lean professional is asked to implement a Lean tool to improve the visibility of problems in a process.

Which tool is the best choice to start with?

Question

47  of 60
Given the following output of a gage R&R study:

Source % Study Variation
Total gage R&R 9.52
Repeatability 7.70
Producibility 5.59
Operator 5.59
Part-to-part 99.5
Total Variation 100.00


A few statements are made about this:

1. The %contribution of Total Gage R&R is about 10%.
2. There is no part * operator interaction.
3. The measurement system is classified as ideal.
4. Part-to-part is the largest cause of study variation.

What can be deduced from the study?

Question

48  of 60
A supplier of wooden poles measures the length of poles produced by two employees Harry and Edward. The results are in the table below:

Employee Mean StdDev
Harry 1571 3.2
Edward 2569 2.8


They test the difference between the average lengths of the poles (two-sided with α = 0.05) and assume equal variances.

What is the p-value and the conclusion?

Question

49  of 60
Who makes the project charter in a Lean Six Sigma project?

Question

50  of 60
Using Lean Six Sigma methodology, what will be the failure rate for a company at 5 sigma level?

Question

51  of 60
Given the information below and use a 5% significance level.

Rocket A Rocket B
Sample size 61 readings 45 readings
Variance 1.347 km2 2.137 km2


Does the range of rocket type B has a larger variance than the range of rocket type A?

Question

52  of 60
What is not a benefit of a designed experiment?

Question

53  of 60
See the dataset below:

7, 6, 9, 8, 5, 7

What is the standard deviation?

Question

54  of 60
In the following ANOVA table, a p-value is missing.

Source SS DF MS F p
Material 327 3 109 4.36 ?
Machine 180 5 36 1.44 0.32
Interaction 375 15 25 1.00 0.53
Error 175 7 25
Total 1057 30


What is the missing p-value?

Question

55  of 60
On ten consecutive days, three parts were sampled from a process to analyze the stability of the process.

The specification range is 98 ± 6.

Subgroup Sample1 Sample2 Sample3
1 100 101 100
2 95 93 97
3 101 103 100
4 96 95 97
5 98 98 96
6 99 98 98
7 95 97 98
8 100 99 98
9 100 100 97
10 100 98 99


Which statement is true?

Question

56  of 60
An X-bar and Range control chart is based on a sample size of 4. An operator mistakenly samples 2 parts instead of 4. The average and the range of the two observations are plotted on the control chart.

Which statement best describes the effect of this mistake?

Question

57  of 60
When a Belt wants to visualize and examine the center and spread of the data.

What can the Belt best use?

Question

58  of 60
Why should a project charter be set up?

Question

59  of 60
A 2-level full factorial design with 4 quantitative factors A, B, C and D is created. 4 center points and no replicates are used. The results of the analysis are below.

Factorial Regression: Response versus A; B; C; D

Analysis of Variance (ANOVA)

Source DF Adj ss Adj ms f-value p-value
Model 11 2802.20 254.75 58.65 0.000
Linear 4 2701.25 675.31 155.47 0.000
A 1 256.00 256.00 58.94 0.000
B 1 2304.00 2304.00 530.42 0.000
C 1 20.25 20.25 4.66 0.063
D 1 121.00 121.00 27.86 0.001
2-Way Interactions 6 93.75 15.62 3.60 0.049
A*B 1 4.00 4.00 0.92 0.365
A*C 1 2.25 2.25 0.52 0.492
A*D 1 0.00 0.00 0.00 1.000
B*C 1 6.25 6.25 1.44 0.265
B*D 1 81.00 81.00 18.65 0.003
C*D 1 0.25 0.25 0.06 0.816
Curvature 1 7.20 7.20 1.66 0.234
Error 8 34.75 4.34
Lack-of-Fit 5 6.00 1.20 0.13 0.976
Pure Error 3 28.75 9.58
Total 19 2836.95


What can be concluded from the results table using a 5% significant level?

Question

60  of 60
The following 10 measurements were provided by an appraiser.

The True Value is 0.80mm.

1 = 0.75 6 = 0.80
2 = 0.75 7 = 0.75
3 = 0.80 8 = 0.75
4 = 0.80 9 = 0.75
5 = 0.65 10 = 0.70


What is the bias measurement in this system?