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Accurate Answers To Lean Six Sigma Green Belt With Minitab Interview Questions

It wouldn’t be wrong to say that the secret of industrial development lies with Lean Six Sigma Green Belt With Minitab Certification holders. Their team-oriented approach and Minitab using skills are adequate for enhancing work environment conditions. Nothing is based on fiction but facts, given the tools used by green belts. They assure organizations of waste removal and problem elimination from the latter’s business processes. Backed by the statistical calculations and data-analyzing techniques of Minitab, certified green belt professionals derive exact results from organized actions. A mindset for continual improvement is at work at the same time which makes them successful.

This is the reason that these professionals are so much in demand from various industries across the globe. To know if selecting the right candidate, employers demand truly functional solutions to their questions. A beforehand rehearsal helps candidates instantly read the interviewer’s mind to find what answer is exactly expected from them. From definitions to functions and their applications, everything should be clearly visible in the mind. Good command of using lean six sigma and Minitab in respective situations must get reflected when questioned by an interviewer.

FMEA (Failure Mode Effect Analysis) is a methodology that ranks the possible flaws within an operational process. Based on the severity level of a defect, a user determines the time to be spent on process validation. This process ensures that a process is free from known defects during its execution. It identifies the causes thereby, preventing the occurrence of flaws.

Planning of data collection has two aspects. Firstly, the kind of data that will be collected undergoes evaluation in this plan. The second aspect includes the analysis of the collected data’s sources. The objective of data collection is to comprehend the existing process and depict the possible areas of improvement for employees. Input, process, and output are the 3 basic sources of data collection.

The letters in ‘SIPOC’ denote suppliers, input, process, output, and consumers. All these components together make this methodology a timely sequence of activities in the direction of attaining the desired output. SIPOC methodology identifies the execution of existing processes, and the improvement, and modification of the processes. It also inquires about the implementation of changes during the DMAIC phases.

The first prejudice regarding Lean Six Sigma is that it is only meant for diminishing process errors. Another myth is that this methodology is used for project deployment or production. Thirdly, it is of no use in day-to-day tasks. Last but not least, lean six sigma doesn’t apply to engineering processes. All of these are preconceived notions that can only be cleared by Lean Six Sigma Green Belt With Minitab Certification holders.

Lean Six Sigma With Minitab Certified individuals don’t use the top-down approach often in lean six sigma implementation. This kind of approach is aligned with consumer needs and business strategy. At the same time, it has a broad scope that might not fit into a limited schedule. A span of 3-6 months is considered appropriate concerning industry standards for a lean six sigma project completion.

Lean Six Sigma Green Belt With Minitab Certified Professional takes care of performance enhancement by detecting variance and waste. This waste can be broadly classified under extra processing, overproduction, transportation, motion, inventory, and defects.

Load testing is conducted to test the behavior of a program or an application. It is executed to find the number of users who can smoothly access the application at the same time. So, this testing process analyzes if the application has a higher load limit than the user’s requirement. On the other hand, performance testing stresses the application’s overall performance. It includes both stress testing and load testing.

COPQ(Cost of Poor Quality) is the outcome of production defects. Extra utilities, materials, labor, disposition, and rework costs are included in COPQ. Prevention and detection expenses are not taken into account. The loss of revenue and expenses to fix the variance of the proposed with the actual quality of the product.

Lean Six Sigma Green Belt With Minitab Certified individuals use control charts at the time of assessing a process’s durability within a given period. This chart assists in deciding project changes. The data in this chart can be applied to a Pareto Chart or histogram for further observations.

‘Kano’ model is used to detect consumer opinion regarding a product’s characteristics. It compares the product traits with their corresponding satisfaction levels. The features are indifferent, dissatisfying, delighters, customer needs, and must-haves. Dr.Kano is the inventor of this product-developing tool.

The project scope is a section of project planning which involves the establishment and documentation of objectives. These include project budgets, deadlines, tasks, and project-specific goals. It ensures that project executioners don’t concentrate on any unnecessary things other than these factors.

DOE(Design of Experiment) is a tool used at the stage of improving the process quality. This methodology solely emphasizes improving product design and testing by implementing necessary solutions. It conducts business case revision and risk assessment, prepares improvement plans, and updates stakeholder assessment. DOE enlists statistical results derived from the active study of the process.

Takt time measures the quantity of output against consumer demand in the domain of manufacturing. This is calculated by making the customer demand number to divide the number of hours or months of production time. The calculated value offers the time limit for manufacturing each product to timely cater to consumer requirements. It is a significant tool in ensuring efficient goods flow from one build station to another.

As per the 80/20 rule of the Pareto principle, the cause of 80 percent of events is just 20 percent. It suggests rewarding 20% of the total employees if they are solely responsible for attaining 80% of the desired output. An organization should aim at satisfying only those 20% of clients whose contribution to its business revenue is 80%. It need not put extra effort into expanding its consumer base but into motivating the potential existing 20 percent clients. Pareto’s principle is more an observation than a mere law that advises focusing on the fruitful 20% instead of wasting time on perfection (80%).

DMADV methodology proves useful in the development of a new process or product that doesn’t presently exist in the organization. It is also applicable when the existing process or product is unable to cater to the customer's requirement level. This is when the DMAIC optimization of the product or process has failed.

Affinity diagrams prove useful at the end of brainstorming sessions. The ideas generated from these sessions are used to evaluate severe issues. Affinity diagrams ease the work of classifying these ideas into sub-categories. They are useful analytical tools to streamline solutions for respective problems in operational processes.

The effectiveness of processes in a lean six sigma green belt project is analyzed through the use of metrics. These help in the decision-making regarding performance for meeting the end objectives. SMART model is used to implement these metrics to attain the desired goals without performing negative actions.

Secondary and primary metrics indicate the success of a project. Primary metrics are concerned with the measurement of business goals-aligned processes. The number of errors and project completion time are examples of primary metrics. Secondary metrics ensure the smooth sailing of processes. They are used for measuring procedures that aren’t directly aligned with business objectives.

Lean Six Sigma Green Belt With Minitab Certified professionals can identify corrupted projects. Such situations are determined through certain signs. These are mainly the appearance of error messages while trying to access a project for updating it. Even after having saved the project some items may still be unavailable when the project is reopened. Or, the project may not open at all. The graphs may just appear but not remain linked to the worksheet.

Whether a project is a green belt or black belt is determined by the areas it includes and the benefits derived from it. A project can be designated as a green belt if it involves only one process. On the other hand, the scope of a project considered a black belt would have a relatively broader scope.

Enabled with a user-friendly interface, Minitab facilitates the smooth execution of data analysis. It allows analysis and design experimentation, as well. Apart from the advantageous features like the syntax and drop-down menu, Minitab supports multiple languages. This makes work easier for Lean Six Sigma Green Belt With Minitab Certification holders.

Every detail of a project fits into a Minitab worksheet comprising matrices, constants, design objects, and columns. This file contains all the contents of the worksheet. Therefore, users can share project information at a faster pace without having to send all project details.

The use of Minitab enabled with features for storing and recognizing data makes the execution of lean six sigma methodology easier. Minitab identifies numerical data of any kind whether it is related to date or time.

Sample-t test, linear regression, and tests related to sample size, variances, and proportions give accurate results on using Minitab. ANOVA and correlation are the other significant data analysis operations of Minitab.

DFSS (Design For Six Sigma) is a method for managing business processes. It is linked to the conventional lean six sigma process and proves useful to several industries. Such as those related to electronics, finance, waste management, basic engineering, marketing, etc.

Critical to Quality Tree (CTQ) is a Six Sigma tool used to convert broad customer demands into accurate, feasible, and measurable performance objectives. This tool aids in converting the requirements of the consumer into measurable requirements for the good or service.

Direct observations, surveys, interviews, focus groups, suggestions, observations, customer feedback, complaint data, existing company data, and industry data are some ways an organization can capture the Voice of Customer.

The term “Voice of the Customer" refers to the feedback, expectations, and preferences of a consumer regarding a good or service. It is the opinions expressed by customers on their experiences with and expectations from the goods and services. Every business that wants to understand and satisfy customer requirements and expectations should capture the Voice of the Customer (VoC).

  • Defect rate
  • Process cycle time
  • Lead time
  • Process measurement
  • Process capability
  • X-bar
  • Utilization

The three categories of Six Sigma Metrics are Yield Metrics, Speed Metrics, and Cost Metrics.
  • Yield Metrics include Defects per Million Opportunities, Defects per Unit, Rolled Throughput Yield
  • Speed Metrics include Cycle time
  • Cost Metrics include Cost of Poor Quality.

An organization classify its customers into two categories: internal and external. Customers who are inside the organization are known as internal customers. It includes management, staff members, or any department that serves the organization's functional needs. On the other hand, External customers are not affiliated with the company, but they either have a stake in the company or use a product or service. It includes shareholders, clients, and end users.

Organizations can classify VOC into four distinct categories Voice of Associate, Voice of Investor, Voice of Customer, and Voice of Process. Voice of Associate is the feedback that a company receives from its workforce; Voice of Investor is the feedback of Management and Shareholders; Voice of Customer is the feedback Clients and End-users; Voice of Process is the feedback gained from assessing CTPs and CTQs.

The following are the elements of the Critical to Quality Tree (CTQ).
  • Customer’s needs
  • Drivers
  • Performance requirements

The Process Capability Index is a statistical metric that evaluates a process's capacity to generate products within certain limits. Cpk is the process's capacity to reduce variance. It is computed by dividing the defect data's standard deviation by the X-bar.

The quantity of wasted or defective material that a company generates throughout a production cycle is referred to as material control. Lean Six Sigma Green Belt With Minitab professionals calculate material control by dividing the total amount of waste produced by the number of materials used within a given period.

The following are different types of waste
  • Defects
  • Overpopulation
  • Non-utilized talent
  • Transportation
  • Waiting
  • Inventory
  • Motion
  • Extra processing

5S is a method of organizing a workspace to make it safe, efficient, and effective. It reduces waste and optimizes productivity by maintaining an orderly workplace and using visual cues to achieve more consistent operational results. The 5S pillars, Sort (Seiri), Set in Order (Seiton), Shine (Seiso), Standardize (Seiketsu), and Sustain (Shitsuke).

Process mapping is a graphical presentation that provides descriptive and illustrative explanations of the activities completed. It visually represents the inputs, actions, and outputs of a process. Process mapping directs decision-making and assists participants in carefully visualizing the process's details.

The basic types of statistics used in Six Sigma are as follows:
  • Descriptive statistics
  • Central Tendency
  • Measure of dispersion
  • Inferential statistics
  • Regression Analysis
  • Hypothesis Testing

The following are different types of Hypothesis Testing for Six Sigma Data Analysis
  • Normality
  • T-test
  • Chi-Square Test for Independence
  • Homogeneity of Variance
  • Analysis of Variance
  • Mood’s Median
  • Welch’s T-test
  • Kruskal-Wallis H Test

Six Sigma professionals can easily monitor how tasks are progressing through the process by using the Kanban board. Areas of inefficiency will be swiftly brought to light by this process visualization. Additionally, its visual depiction is straightforward, making bottlenecks visible as they arise.

The principles of Poka Yoke are
  • Elimination
  • Prevention
  • Replacement
  • Facilitation
  • Detection
  • Mitigation

  • Mean: the arithmetic average of all data points in the data set
  • Median: the middlemost data point in the data set
  • Mode: most frequently occurring data point in the data set
  • Range: the difference between the largest and smallest values in the data set

Bar Charts, Pie charts, Pareto charts, Run charts, Normality tests, Process Capability Analysis, Histograms, Scatter plots, Dot Plots, Matrix plots, and Box plots are some graphical analysis tools in Six Sigma.

Transport waste refers to excessive or inefficient transportation in production processes. Transportation waste leads to damage or loss of materials, increased costs, and heightened risk of accidents or injuries. Moreover, it prolongs the duration of a product's progression through its production process.

  • Top-Down Process Maps: show a process's primary ideas without going into great depth. It is employed for both the development of new procedures and the analysis of current ones.
  • Detailed Process Maps: provide a more thorough and specific perspective of a process. It offers a detailed explanation of what occurs at each stage of the procedure.

The fundamental symbols used in flowcharts are the oval, rectangle, diamond, parallelogram, and arrow. The oval marks indicate the start/end. The rectangle symbolizes a step in the procedure (tasks or actions); the diamond symbolizes a decision; the parallelogram represents information that has been generated or received, such as an email or a product; the arrow guides the viewer along.

The three types of process flow diagrams are:
  • Cash Flow Process
  • Manufacturing Flow Process
  • Design Flow Process

Analysis of variance (ANOVA) is a statistical technique used to ascertain if the means of two or more groups differ significantly from one another. It assesses if group means differ significantly from one another by comparing them.

Internal failure cost is incurred when poor quality is identified before it is delivered to the customer. It includes inefficient activities such as doing pointless tasks or holding out products a mistake involving inadequate planning and communication.