FREE Lean Six Sigma Green Belt Prep Questions and Answers

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Which of the following claims concerning long-term process variation in comparison to short-term variation is the most accurate?

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Long-term process variation contains all forms of variation in the process, while short-term process variation only includes the variation that occurs within a specific subgroup or batch of data.

A approach called "the voice of the customer" understanding is used to give customers:

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Understanding "the voice of the customer" (VOC) is a fundamental technique used in quality management and customer-centric approaches, such as Lean and Six Sigma, to provide customers with services and products that meet their expectations and needs.
"The voice of the customer" refers to the process of gathering and understanding the specific requirements, expectations, preferences, and feedback of customers regarding a product, service, or process. By actively listening to and analyzing customer feedback, organizations can gain valuable insights into what customers truly value and desire.

Which of the following mistakes in a hypothesis test is frequently linked to a "False Positive"?

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In a hypothesis test, a Type I error is typically associated with a "False Positive."
Type I error, also known as alpha error or producer's risk, occurs when the null hypothesis is incorrectly rejected when it is actually true. In other words, it is the probability of concluding that there is a significant effect or difference when, in reality, there is no such effect or difference in the population being studied.

Which approach includes the practice of value stream mapping as one of its toolkits?

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Value Stream Mapping (VSM) is a technique that is considered to be part of the toolkit from Lean methodology.
Value Stream Mapping is a powerful visual tool used in Lean management for analyzing and improving the flow of materials and information within a process or across an entire value stream. The value stream represents all the activities and steps required to deliver a product or service to the customer, from the raw materials to the final product.

A multiple regression model includes each of the following, EXCEPT:

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The term "Blocks" usually refers to a specific technique used in regression models, such as "Blocked Multiple Regression" or "Hierarchical Regression," where the independent variables are divided into blocks or subsets and are entered into the model in a specific order. Since you requested to exclude "Blocks," I have not included that in the list of components.

What Lean Six Sigma tool is used to organize and provide order to the way tools and equipment are set up in the workplace?

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The 5S Lean Six Sigma tool is used to organize and create order in the layout of tools and equipment in the workplace. It is a foundational technique in Lean management and plays a crucial role in improving workplace efficiency, safety, and overall productivity.

What item needs to be avoided during the define phase?

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In the Define phase of a Lean Six Sigma project, the primary focus is on defining the problem, objectives, and scope of the project. The identification of root causes typically occurs in the Analyze phase of the DMAIC (Define, Measure, Analyze, Improve, Control) methodology.

An experimental factor is?

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In a designed experiment, an input variable is often referred to as an experimental factor.

It is crucial to recognize who the process's customers are at all times. Which of the following best describes the term "The Customer"?

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Understanding who the customer is in a process is a fundamental aspect of quality management and process improvement. The best definition of "The Customer" is anyone who receives a product or service from the process or could potentially receive a product or service from the process.

Fractional factor and full factor are both

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Both Full Factorial and Fractional Factorial Designs are valuable tools in experimental design and hypothesis testing. They allow researchers and engineers to efficiently explore and understand the relationships between factors and responses in a systematic manner. By using DOE designs, organizations can optimize processes, improve product designs, and make data-driven decisions to achieve better quality and performance. The choice between Full Factorial and Fractional Factorial depends on the specific objectives of the study, available resources, and the complexity of the factors involved.

A Lean Six Sigma project's authorized written plan detailing the anticipated advantages to the business and anticipated cost savings is known as a

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The name of an approved written plan outlining the expected benefits to the business and the anticipated savings from running a Lean Six Sigma project is called a Project Business Case.
The Project Business Case is an essential document used in the early stages of a Lean Six Sigma project, particularly during the Define phase of the DMAIC (Define, Measure, Analyze, Improve, Control) methodology. It serves as a justification and proposal for undertaking the project, providing a clear rationale for investing time, resources, and effort into the improvement initiative.

What is the constant focus of the Critical to Quality (CTQ) Lean Six Sigma concept?

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The Lean Six Sigma concept of 'Critical to Quality' (CTQ) always focuses on meeting the specific requirements of the customer.
In Lean Six Sigma, the term CTQ refers to the key characteristics or attributes of a product, service, or process that are critical in meeting the needs and expectations of the customer. These CTQs are the factors that have a direct impact on customer satisfaction and are considered vital for the success of the project or improvement initiative.

A product or service that falls short of the client's expectations is referred to as

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A product or service that does not meet the expectations of the customer is often referred to as a defective product or service.

What is the name of the methodology employed when a business compares its performance to that of best-in-class businesses?

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Benchmarking is the technique used by a company to measure its performance against that of best-in-class companies or industry leaders. It involves comparing various aspects of a company's processes, practices, and performance metrics to those of top-performing organizations or competitors with the aim of identifying opportunities for improvement and best practices.

When it's necessary to adhere more closely to processes and work instructions, what basic quality tools would a work team find most useful to use?

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Standard Operating Instructions (SOIs) and Visual Management are highly applicable tools for a work team to use when there is a need to follow procedures and work instructions more closely.

The relationship between a Response Variable (Y) and a Predictor Variable (X) is described by a ________ equation.

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A regression equation describes the relationship between a response variable (Y) and one or more predictor variables (X). The equation represents the mathematical model that estimates how changes in the predictor variables are associated with changes in the response variable.

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