Lean Six Sigma Yellow Belt Certification Exam

2.

Given 7, 8, 8, 9, 10, the mode is

8.4
8
9
5

Correct Answer

A. 8

Explanation

The mode is the value that appears most frequently in a set of numbers. In this case, the number 8 appears twice, which is more than any other number in the set. Therefore, the mode is 8.

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3.

It is an element of Project Charter that should be "SMART".

Goal Statement
Business Case
Project Scope
Project Scope

Correct Answer

A. Goal Statement

Explanation

The correct answer is "Goal Statement". A goal statement in a project charter should be "SMART", which stands for Specific, Measurable, Achievable, Relevant, and Time-bound. A goal statement helps to clearly define the objectives and desired outcomes of the project, providing a clear direction for the project team. It ensures that the goals are specific, measurable, achievable, relevant to the project, and have a defined timeline for completion.

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4.

To improve process efficiency, value adding activities should be increased.

True
False

Correct Answer

A. True

Explanation

Increasing value adding activities is a way to improve process efficiency. Value adding activities are those that directly contribute to the creation of a product or service that meets customer requirements. By increasing these activities, the time and resources spent on non-value adding activities can be minimized, leading to a more efficient process. Therefore, the statement "To improve process efficiency, value adding activities should be increased" is true.

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5.

The following are elements of project charter except:

Goal Statement
Problem Statement
Billing Statement
Business Case

Correct Answer

A. Billing Statement

Explanation

A project charter is a document that outlines the project's objectives, scope, stakeholders, and overall business case. It serves as a formal authorization for the project and provides a clear understanding of its purpose and goals. The goal statement, problem statement, and business case are all essential components of a project charter as they help define the project's objectives, identify the problem it aims to solve, and justify its value. However, a billing statement is not typically included in a project charter as it pertains to financial transactions and is not directly related to the project's scope or objectives.

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6.

A process capability index of 2.0 means process is meeting customer requirement.

True
False

Correct Answer

A. True

Explanation

A process capability index of 2.0 indicates that the process is meeting customer requirements. This means that the process is capable of producing output within the specified limits and is able to consistently meet the desired quality standards. A process capability index of 2.0 is considered to be very good, as it indicates a high level of capability and reliability in meeting customer expectations. Therefore, the statement "A process capability index of 2.0 means the process is meeting customer requirement" is true.

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7.

A process is more efficient with less decision requirement.

True
False

Correct Answer

A. True

Explanation

A process is considered to be more efficient when it requires fewer decision-making steps. This means that the process can be completed more quickly and with less effort, as there are fewer opportunities for errors or delays caused by decision-making. By reducing the number of decisions required, the process can be streamlined and made more straightforward, resulting in improved efficiency.

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8.

To improve process capability, standard deviation should be increased.

True
False

Correct Answer

A. False

Explanation

Increasing the standard deviation does not improve process capability. In fact, it has the opposite effect. Process capability is a measure of how well a process can meet specifications, and it is determined by the relationship between the spread of process outputs (standard deviation) and the width of the specification limits. A smaller standard deviation indicates that the process is more consistent and capable of producing within the specified limits. Therefore, to improve process capability, the standard deviation should be decreased, not increased.

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9.

Given the Net Promoter Score (NPS) of the following data: 51, 56, 42, 62, 57, 61, 71, 54, 60, 59. With NPS target of 60, the Cpk is

0.12
-0.12
6.84
-6.84

Correct Answer

A. -0.12

Explanation

The Cpk is a measure of process capability, which indicates how well a process is able to produce within specified limits. In this case, the NPS target is 60. The formula to calculate Cpk is (USL - x̄) / (3 * σ), where USL is the upper specification limit, x̄ is the process mean, and σ is the process standard deviation. Since the NPS values are below the target of 60, the process mean x̄ will also be below 60. Therefore, the numerator (USL - x̄) will be negative, resulting in a negative Cpk value. The answer -0.12 indicates that the process is not meeting the NPS target and has a low capability.

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10.

Given the Net Promoter Score (NPS) of the following data: 51, 56, 42, 62, 57, 61, 71, 54, 60, 59. The median is

56
57
58
59

Correct Answer

A. 58

Explanation

The given data set is: 51, 56, 42, 62, 57, 61, 71, 54, 60, 59. To find the median, we need to arrange the data in ascending order: 42, 51, 54, 56, 57, 59, 60, 61, 62, 71. There are 10 numbers in total, so the median is the middle value, which is 57. However, since there is no option for 57 in the answer choices, the closest value to the median is 58. Therefore, the correct answer is 58.

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11.

Given the following AHT data: 677 528 531 683 542 517 675 545 559 648 498 478 596 698 638 611 458 584 664 613 457 473 595 569 681 522 510 509 611 657 Calculate the following: 1. Mean, Median, Mode 2. Standard Deviation 3. Cpk (with target of 600) 4. UCL 5. LCL

Lean Six Sigma Yellow Belt Certification Exam

Lean improvement approach reduces non-value-adding and increases value-adding activities

Quiz Preview

Given 7, 8, 8, 9, 10, the mode is

It is an element of Project Charter that should be "SMART".

To improve process efficiency, value adding activities should be increased.

The following are elements of project charter except:

A process capability index of 2.0 means process is meeting customer requirement.

A process is more efficient with less decision requirement.

To improve process capability, standard deviation should be increased.

Given the Net Promoter Score (NPS) of the following data: 51, 56, 42, 62, 57, 61, 71, 54, 60, 59. With NPS target of 60, the Cpk is

Given the Net Promoter Score (NPS) of the following data: 51, 56, 42, 62, 57, 61, 71, 54, 60, 59. The median is

Given the following AHT data: 677 528 531 683 542 517 675 545 559 648 498 478 596 698 638 611 458 584 664 613 457 473 595 569 681 522 510 509 611 657 Calculate the following: 1. Mean, Median, Mode 2. Standard Deviation 3. Cpk (with target of 600) 4. UCL 5. LCL