Lean Six Sigma Black Belt Sample Paper 2: Background 1. One of the following statements about Six Sigma is NOT TRUE: Six Sigma as a set of tools includes both qualitative and quantitative techniques used to drive process improvement DMAIC is the only Six Sigma methodology adopted and recognized by the Industry Six Sigma quality performance means 3.4 DPMO (accounting for 1.5 sigma shift in the mean) Six Sigma recognizes the underlying and rigorous approach known as DMAIC, starting with identifying the problem and ending with the implementation of long-lasting solutions2. “Six Sigma” used as a process performance metric means: We can accommodate 6 standard deviations between the mean and the specification limit The process width is ± 3 standard deviations from the mean The specification width is 6 standard deviations All the above3. Choose the exception from the following: Normal distribution Poisson distribution Binomial distribution Discrete-Uniform distribution4. “Data collection for primary and secondary metrics to gain insight and establish baseline”, is the main purpose of Define phase Control phase Analyze phase Measure phase5. When speed is essential, and survival of the organization is at stake, the following approach is best suited for dealing with change: Education and communication Participation and involvement Implicit and explicit coercion Facilitation and support6. In case of a perfect normal distribution: The mean, median and mode are usually the same The median does not exist Mean and median are same, but mode is different Mean is higher than median7. Six Sigma Level can be achieved by having less than 3.4 defects per million opportunities six levels of testing before release six times better quality than baseline Six Nines Quality (99.9999%)8. What strategy should be used for “Low importance and high commitment” stakeholders Minimize dependency on this type of stakeholder Protect and defend these stakeholders Monitor these stakeholders, but don’t spend resources on them These stakeholders are capable of sabotaging plans, escalating problems and are considered high risk9. When the VP of a small company announced to his managers that the company would implement a flexible working schedule for all employees, numerous rumors began to circulate as none of them knew what flexible working hours meant. One rumor, for instance, suggested that flexible hours meant that most people would have to work whenever their supervisors asked them to—including evenings and weekends resulting in high resistance. It never occurred to the VP, that he might run into such a resistance. What is the most appropriate reason for this resistance? Parochial self-interest Misunderstanding and lack of communication Low tolerance to change All the above10. Which one of the following is NOT one of the eight steps from John Kotter’s book “Leading Change”? Create short term wins Make change stick Identify resistors to change Create a sense of urgency11. One of the following statements is incorrect Kanban is Japanese for “Visual signal” or “Signal card” It can only be implemented using visual indicator called Kanban cards Just-in-Time manufacturing in Toyota uses Kanban cards as a signal between two dependent processes to facilitate smoother and just in time flow of parts between them In a pull system, the process produces only when there is a pull (demand) from the subsequent process, signaled as a Kanban card12. One of the following statements is TRUE: If the process behaves consistently over time, then we say that the process is capable Knowing about process stability makes us rest assured about process capability Process capability assessment should only be performed after first demonstrating process stability Process stability is a measure of the ability of the process to meet specifications13. All the examples below are of discrete data, EXCEPT: Number of complaints Number of hours Number of defects Number of tickets raised14. Likert-type data is an example of Continuous data Nominal data Ordinal data Binary data15. The purpose of Toll Gate review is to: review progress and kick off the next phase get a formal sign-off from the stakeholders confirm if the earlier phase was completed successfully All the above16. __________ is a graphical tool of choice to show frequency distribution of discrete data. Bar graph Histogram Box plot Scatter plot17. Choose the INCORRECT statement: For a large dataset calculation of standard deviation is preferred over range From the standard deviation one can derive the Min and the Max values of the dataset Calculation of range uses only two values from the dataset To reduce the problems caused by outliers in a dataset, the inter-quartile range is often calculated instead of the range.18. In a standard normal distribution, which of the following is true: Mean =0, Standard deviation= 1 Mean =1, Standard deviation= 1 Mean =0, Standard deviation= 0 Mean =1, Standard deviation= 019. __________ provides a quick look at the planned activities, schedule, allows for assessment of key resources and project performance against plan. Control chart Gantt chart Planning chart Run chart20. With respect to RACI matrix one of the following statements is NOT TRUE: Responsible: The individual ultimately responsible for the results Responsible and accountable can be the same Responsible: Individuals who actively participate in an activity There could be many responsible but only one accountable21. According to B. W. Tuckman’s “Developmental Sequence in Small Groups”, one of the following is not an attribute of the “FORM” stage of team formation Group is going through the “honeymoon” period Not much work is accomplished Team members exhibit high agreement on initial discussion topics Team members resolve their conflicts22. Turnaround time (TAT) data collected shows normal distribution with mean of 5 and standard deviation of 1. What is the chance that the TAT will be between 4 to 6: 68% 95% 99% Not enough information to calculate23. Which of the following statements is TRUE about variance? It is the square of standard deviation It has the same unit as that of the mean It has the same unit as that of the data It is a measure of central tendency24. All the following statements are TRUE, except DMADV is mostly used when a process or a product is not in existence and one needs to be developed DMADV can be used if the current product/process exists, has been optimized but still doesn’t meet customer/business expectations DMADV can be used in research and development DMADV is a reactive and DMAIC is a proactive approach.25. Kaizen is a Japanese term for “change for improvement” or improving processes through small incremental steps. Breakthrough improvement is referred to by another Japanese term______ Kanban Kaikaku Hoshin Kanri Gembutsu