Lean Six Sigma Yellow Belt Certification Exam

The statement is true because the lean improvement approach aims to eliminate waste and streamline processes in order to increase value-adding activities. By identifying and eliminating non-value-adding activities, such as unnecessary waiting, overproduction, or defects, organizations can improve efficiency and productivity. This allows them to focus more on activities that directly contribute value to the customer, such as product development, quality improvement, or customer service. Overall, the lean improvement approach helps organizations optimize their operations and deliver higher value to their customers.

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.

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.

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.

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.

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.

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.

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.

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.

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.