Black Belt Sample Paper by Vishwadeep Khatri | Jun 2, 2020 | 0 comments Q. With respect to control charts, which of the following is NOT correctly matched? Y-axis: Value of the metric under observation Centerline: Represents process average Control limits: Placed at Process average ± Standard deviation X-axis: Time order in which subgroup data was collectedQ. What is plotted on a U-chart? Defects per unit with respect to time Unusual observations with respect to time Uniformity with respect to time Count of Defects with respect to timeQ. All the points below are questions in the define phase tollgate, except _______ Is there data to understand customer requirements? Has a similar problem been solved before? What is the project timeline? What have you done to ensure reliability of the measurement systems?Q. With respect to Pearson’s correlation coefficient, which of the following is NOT true? The range is from -1 to 1 It is the square root of the coefficient of determination (for linear relationship) Value of ‘-0.1’ mean perfect negative correlation Value of ‘0’ means no correlationQ. Statements given below are true, EXCEPT: In Resolution III designs, the main effects are confounded with 2 factor interaction effects In Resolution IV designs, the main effects are confounded with 3 factor interaction effects The maximum resolution in fractional factorial designs is Resolution V Low resolution designs can serve the purpose of screening rather than optimization if we have many factorsQ. A physiologist wants to determine whether a particular treatment has an effect on resting heart rate. The heart rates of 25 randomly selected people were measured. The people were then put on the treatment and measured again 6 months later. If the data follows normal distribution which is an appropriate test to compare the before and after treatment conditions? 2 Sample t test Paired t test 2 proportion test Mann Whitney testQ. Which of the following is NOT matched correctly? Repeatability: Variation in measuring equipment when measured by one appraiser in the same setting at the same time Bias: Difference between observed value and true value Stability: Accuracy of measurement at various measurement points of the measuring range in the equipment Reproducibility: Variation in measurement when measured by two or more appraisers multiple timesQ. Rework, over-production, inventory, and motion are all examples of __________ Noise factors Waste Value-adds Nuisance factorsQ. The Quality Assurance department at a call center wants to compare the call times on incoming calls for two teams. For each team, 300 incoming calls are timed. Which hypothesis tests can be used to determine whether the teams differ in their call time variations and call time means respectively? Bartlett’s test and One-way ANOVA F-test and Two-way ANOVA Bartlett's test test and 2 proportion test F-test and 2-sample t testQ. Which of the following is true for a NP chart? The chart plots number of defectives The center line is the average number of defects Control limits are ragged All the aboveQ. Which of the following pairs is correctly matched? Full factorial design: Changing one variable at a time (keeping others constant) to understand the impact on the output Trial and Error: Randomly changing multiple inputs to observe changes to output Fractional factorial design: Running all factors at all levels and developing a model One-factor at a time: Running a subset of the full factorial designQ. Which of the following is true for Poka Yoke? Human errors are avoided Shutdown, Control and Warning are types of Poka Yoke Even if defects occur, they do not move to the next step All the aboveQ. A control chart that does not have any out-of-control condition is considered ___________, and the process is operating in a state of __________. stable, statistical control stable, no non-conformance capable, equilibrium capable, statistical controlQ. Errors in invoice’s are tracked on a daily basis. On an average each invoice has 0.5 errors. This data follows ___________ distribution? Normal Poisson Binomial UniformQ. Which of the following statements is TRUE? As the difference to be detected becomes large, required sample size becomes small (Other things kept constant) As the standard deviation decreases, required sample size increases (Other things kept constant) As power decreases, required sample size increases (Other things kept constant) As Alpha increases, required sample size increases (Other things kept constant)Q. Which of the following statement regarding model reduction for 3 factors (A,B & C) is FALSE? Insignificant C can be dropped even if BC is significant Insignificant AB can be dropped even if A and B are significant AC can be significant even if A and B are insignificant If ABC is significant, then no model reduction can be doneQ. While performing Attribute Agreement Analysis (AAA) which of the following is true? It can only be performed if the standard is known Appraiser Repeatability can be checked only if each appraiser evaluates each sample at least twice in random order Appraisers should know in advance that the activity will be performed Samples should be given in a non-random order to avoid data collection errorsQ. Below is the result of a DoE. Which of the effects are significant? (Select the most appropriate option) A, B, AB, ABC A, B, C A, C, AC A, C, BCQ. “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 phaseQ. Which of the following represents the correct sequence of steps in a DoE study? Select Design > Select Factors > Determine optimal settings of factors for desired response > Conduct experiments Determine optimal settings of factors for desired response > Conduct experiments > Select Factors > Select Design Select Factors > Determine optimal settings of factors for desired response > Select Design > Conduct experiments Select Factors > Select Design > Conduct experiments > Determine optimal settings of factors for desired responseQ. Which of the following is NOT true about Goal-Means diagram? It is a type of Tree diagram It starts with a broad goal and fans out into means of accomplishing the goal It is an excellent tool to drill down root causes It helps identify the project 'Y'Q. Which of the following is not a part of the Control Plan? Mistake proofing systems List of critical X's Project Charter Reaction PlanQ. Non-parametric statistical methods (Mood's Median, Mann Whitney etc.) are preferred when ______________ You do not know the underlying distribution of the population Your area of study is better represented by the median You have a sample size of less than 10 and hence might not be able to ascertain normality All of the aboveQ. A team’s goal is to improve information flow in a payroll function. They make 25 Post-It notes, each listing an issue for further investigation. After some discussion, they group them into four categories: mandated record keeping, privacy concerns, insurance concerns, and transfer concerns. This grouping process is best described by which approach to problem solving? Tree diagram Affinity diagram Fishbone diagram Interrelationship diagramQ. What is the best tool to understand the relationship between call time (continuous variable) and customer response (Yes/No) to the question “Are you satisfied with the resolution?”? Ordinal Logistic Regression Binary Logistic Regression Nominal Logistic Regression Multiple Linear RegressionQ. All the statements below are true about X-bar and S chart, EXCEPT ____ In the X-bar chart, the center line is the mean of the subgroup means In the S chart, the center line is the standard deviation of the subgroup standard deviations In the S chart, the center line is the average of the subgroup standard deviations The X-bar chart can be out of control, even if the S-chart is in controlQ. In case of automated data collection with no human intervention in the measurement, _______________ operational definition is not required MSA is not required Logical validation can be performed MSA is impossibleQ. Which of the following statement is incorrect? Cost saving projects affect the bottom line Cost avoidance projects are considered as soft dollar savings Benefits from budget impacting cost avoidance projects are intangible If revenue growth is achieved as an outcome of a project, it is considered as hard dollar savingsQ. Which of the following is introduced in a design to check if the relationship between X & Y exhibits curvature (non-linearity)? Center point(s) Block(s) Randomization FoldingQ. Which of the following is correct? Sigma Level Short Term (Zst) uses overall standard deviation Sigma Level Long Term (Zlt) uses within standard deviation Sigma Level shift (Zshift) is the difference between Zwithin & Zoverall Zwithin is always equal to Zoverall + 1.5Q. The high-level process map at the Define stage should be __________ the “As-is” process made by the process owner or the SME same as the one documented all of the aboveQ. What is the correct sequence for activities given below? Measurement System verification > Process stability evaluation > Rational subgrouping > Process capability evaluation Process stability evaluation > Rational subgrouping > Measurement System verification > Process capability evaluation Measurement system verification > Rational subgrouping > Process stability evaluation > Process capability evaluation Rational subgrouping > Measurement System verification > Process capability evaluation > Process stability evaluationQ. September 23, 1999, after a 286-day journey from Earth to Mars, NASA lost the $125 million Mars Climate Orbiter, after the spacecraft entered into an orbit 100 kilometers closer than planned. NASA used the metric system, while its partner Lockheed Martin, the organization that designed the navigation system, used English units. This is a classic example of the absence of____________ an operational definition a measurement system due diligence risk analysisQ. __________ 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 chartQ. Which of the following is NOT a question in the Control phase tollgate review? Has the Financial Benefit Summary been completed? Has the Resource Manager reviewed it? Has the necessary training for process owners/operators been performed? Have “lessons learned” been captured? Has the scope of the project been finalized?Q. Who can act as the process owner, if the actual process owner is missing? Sponsor SME Champion Either sponsor or championQ. Power of the design can be increased by ________________ Replicating the center points Replicating the corner points Both of the above None of the aboveQ. One factor at a time studies would not be able to identify interactions between the factors as compared to full factorial designs. The statement is ________ False True True, only if center points are included in the design Cannot comment until resolution is knownQ. Calculate the interaction effect (AB) for the following data and match with the appropriate statement 160 0 20 80Q. What is an Operational Definition? It is a clear, concise and unambiguous definition of the CTQ It provides a unified understanding of the data for all involved before the data are collected It includes the formula (if any) that is used to calculate the metric It is all of the aboveQ. Gage R&R study for a measurement system gave the following outcome. What is a suitable inference? Measurement System is accepted but with caution Measurement System is accepted Measurement system is rejected More data is requiredQ. What is the formula for Defects Per Opportunity (DPO)? Defects/Units *1000000 Defects/Opportunities*1000000 Defects/Opportunities Defectives/OpportunitiesQ. Two drugs A & B were evaluated for their effectiveness. However, drug A was tested only in individuals with <30 years age while drug B was tested only in individuals with >30 years age. In such a case the effect of the drugs and age of the individuals is said to be _______________ Randomized Confounded Folded ReplicatedQ. For a linear relationship, the correlation coefficient is 0.9. What is the percentage of variation in Y that is explained by variation in X? 0.81% 81% 0.9% 90%Q. A team wishes to assess the potential problems in the process. Which of the following tools should the team use? PFMEA VSM QFD SIPOCQ. What is the alternate hypothesis for Kruskal-Wallis test? All medians are equal Not all means are equal At least one mean is different At least one median is differentQ. Which of the following statement is INCORRECT? For a large dataset, calculation of standard deviation is preferred over range Standard deviation signifies the central tendency of the dataset Calculation of range uses only two values from the dataset For a dataset with outliers, the inter-quartile range is often calculated instead of the rangeQ. The average defective rate is 10%. Probability calculation was done for a sample of size 10. Result is displayed below. Choose the most appropriate inference Probability of getting at least one defective is 0.65 Probability of getting zero defective is 0.65 Probability of getting at least one defective is 0.35 Probability of getting up to one defective is 0.35Q. Which of the following is NOT a test for special cause in a C chart? 1 point more than 3 standard deviations from the center point 9 points in a row on the same side of the center line 14 points in a row, alternating up and down 8 points in a row > 1 standard deviation from the center lineQ. Based on the table given below, what is the critical path for this project? ABCEFH ABCEGH ABDEGH ABDEFHQ. Amool Milk Powder is sold in packets with an advertised mean weight of 500 gm. The standard deviation is known to be 20 grams. The weight data follows normal distribution. A consumer group wishes to check the accuracy of the advertised mean and takes a sample of 60 packets finding an average weight of 490 g. Which hypothesis test can they deploy? 1 Sample t test 1 Sample z test 1 Sample sign test 1 Proportion testQ. Which of the following statements is incorrect? DoE is done preferably using historical data Multiple Regression can be run on available historical data One-factor at a time (OFAT) is a better approach than Trail and Error DoE is a better approach than One-factor at a time (OFAT)Q. The operators of a manufacturing shop floor out a more orderly arrangement for tool storage and establish a schedule to maintain cleanliness daily. These improvements are best described by which approach to problem solving? 5S Visual aids Poka yoke FMEAQ. What resolution will you choose to perform a two-level fractional factorial design for 6 factors if 2 replicates are necessary and the budget doesn’t allow more than 20 experiments? Resolution IV Resolution VI Resolution II Resolution IIIQ. The customer support team claims that it typically takes about 2 days to respond to a ticket. The team recorded the response time for 100 similar issue tickets and checked for normality. The data was non normal. What hypothesis test can be used to validate the claim? 1 Sample Sign test Moods Median test Mann Whitney test 1 Sample t testQ. Which of the following is an example of a pilot? Prototypes developed for early evaluation by end users Implementation at one work area/region Test marketing All the aboveQ. When speed is essential, and survival of the organization is at stake, which of the following approach is best suited for dealing with resistance to change? Education and communication Participation and involvement Implicit and explicit coercion Facilitation and supportQ. Which of the following statement is incorrect? Lean focuses on making the process faster Lean originated at Ford Motors Six Sigma focuses on making the process accurate Six Sigma originated at MotorolaQ. Which of the following statement is NOT true? The long term variation is generally higher than the short term variation Short-term capability is calculated using pooled standard deviation Measurement system reliability does not affect process capability assessment For a short interval, the variability is often relatively small due to a focus on specific equipment, a set of trained people, homogeneous material, the same measuring system, etc.Q. With respect to DoE, “Block” for_________ factors and “Randomize” for__________factors known nuisance, unknown noise unknown noise, known nuisance known nuisance, known noise unknown nuisance, unknown noiseQ. Which one of the following is NOT a step in John Kotter’s eight step change management plan? Create short term wins Make change stick Identify resistors to change Create a sense of urgencyQ. What is plotted on a P-chart? Number of defectives Percentage of defectives Proportion of defectives Probability of defectives (P-value)Q. Given process average = 1.65, standard deviation =0.05, assuming statistical control and a normal population, what proportion of the population will meet specifications of 1.65 ± .05? 68.27 % 99.73 % 31.73 % 100.0 %Q. If the main effect of factor "A" is 10, it means ___________ When A changes from high to low, the response on an average increases by 10 When A changes from low to high, the response on an average increases by 10 Both of the above None of the aboveQ. Which of the following is true with respect to the interaction effect plot if there is an interaction effect between two factors? There will be two overlapping lines There will be two parallel lines There will be two non-parallel lines None of the aboveQ. All the statements below are false, except ____________ In both Pp and Ppk, the lower the value, the better Cp is always equal to or smaller than Cpk A Ppk below 1, indicates the process average is outside one of the specifications The Pp and Ppk values will be equal if the process is perfectly centeredQ. A process is normally distributed with, USL = 24 and LSL = 18. It has a mean of 20, short-term standard deviation of 1 and long-term standard deviation of 1.5. What will be Cp, Ppk respectively? 1, 0.67 1, 0.44 0.67, 0.44 0.67,0.67Q. Identify the correct sequence for conducting a Gage R&R study. Select 3-5 parts > select the operators > collect data > calculate Gage R&R Select the operators > select 3-5 parts > calculate Gage R&R > collect data Calculate Gage R&R > select the operators > select 3-5 parts > collect data Select the operators > collect data > select 3-5 parts > calculate Gage R&RQ. A document requires 10 essential entries for further processing. In a sample of 100 such documents, defects (missing entries/incomplete entries/incorrect entries) were evaluated. 20 defects were found in 2 documents. What is DPMO, DPU and Yield respectively? 20000, 1, 98% 20000, 0.2, 98% 0.02, 0.2, 98% 20000, 1, 90%Q. Towards the final stages of the LSS project it is important to prepare the lessons learned document because ____________________ The items captured here will help shape and refine how future projects are performed Anytime an action has an unexpected outcome, the event should be logged to make stakeholders aware for future issues of the same type Documenting helps in avoiding “recreating the wheel’ every time All the aboveQ. If a project investment amounts to $1,000,000 and the return estimated is $100,000. What is the ROI? 0.01% 10% 11% Not enough information to calculate ROIQ. Which of the following DoE can also be used as a screening design? Completely randomized full factorial design with center points Replicated factorial Multilevel factorial Fractional factorialQ. Fishbone diagrams cluster causes into categories. Which of the following is NOT normally used as a category? Method Market Man MeasurementQ. Which 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 conflictsQ. A control plan should have __________________ Action plan for out of control conditions Appropriate sample sizes and frequency of testing Risk mitigation plans to ensure X’s stay in control All the aboveQ. Which of the following metric is NOT a part of the “Customer” leg of the Balanced Scorecard? Customer satisfaction levels Return on Investment Referral rates Retention ratesQ. Which of the following statement(s) is incorrect? Every Six Sigma project will not use all the tools Six Sigma only uses statistical tools Six Sigma tools are applicable in all industries All of the aboveQ. All the examples below are of discrete data, EXCEPT _________________ Number of complaints Hours Number of defects Number of tickets raisedQ. Which of the following does NOT help to capture the VOC? Surveys Focus groups Time and motion studies InterviewsQ. Which of the following can be used as a Visual Control? Charts, graphs Signs, digital readouts Colors, shapes, arrows All the aboveQ. An economist wants to determine whether the monthly energy cost for families has increased from the previous year’s average of $50. An increase of at least $5 is considered meaningful and the estimated standard deviation is $3. To detect a difference of 5 with a power of 0.9, the economist needs to collect a sample of minimum _______ observations for the 1-sample t-test. 7 5 2 3Q. Which of the following is an example of a strong Poka Yoke? Shape of the SIM card ensuring the card fits only in one orientation Cellphone alerting the user if battery goes below 20% Fire warning to evacuate the building Notification before sending the email asking “There is no title. Send anyway?”Q. Which of the following is the correct intended movement of the baseline metric after validation? Yield should decrease Defective % should increase Sigma Level overall should increase Performance Ratio (Pp) and Performance Index (Ppk) should decreaseQ. Which of the following are project selection tools? Benchmarking, Replication and Brainstorming Prioritization Matrix, Problem Definition Tree and QFD Pugh Matrix, FMEA and Nominal Group Technique Mistake Proofing, Statistical Process Control, Measurement System AnalysisQ. In case of a perfect normal distribution ____________ The mean, median and mode are the same The median does not exist Mean and median are same, but mode is different Mean is higher than medianQ. Which of the following is true for variable data control charts? If the variation chart is out of control, then the control limits on the mean chart will be inaccurate and may falsely indicate an out-of-control condition When the variation chart is in control, you can be sure that an out-of-control mean chart is due to changes in the process center Chart showing measure of dispersion should be reviewed first All the aboveQ. We have marketing data that contains the impact of three advertising medias (facebook, youtube and instagram) on sales. What approach can be used for predicting sales revenue from the budget invested in the three advertising medias? Multiple linear regression Binary logistic regression Ch-square test Design of ExperimentsQ. Which of the following tool(s) can help break “Big Y’s/CTS parameters” into project Y’s? Tree Diagram Problem Definition Tree Goal Means Diagram All of the aboveQ. When the market price of gold is high, so is the market price of silver. This indicates a strong positive correlation between the price of the two. Which of the following statement is the best take away from this example? Market price of gold going up is causing market price of silver to go up Market price of silver going up is causing market price of gold to go up Correlation always implies causation Sale of both the precious metals might me caused by some other market variableQ. A financial services institution wants to determine if their average loan processing time differs from a competitor’s claim of 5 hours. The analyst randomly selects 20 loan applications from the past 1 month and calculates the time between loan initiation and notification to customer about the institution’s decision. (Assume that the processing time data follows normal distribution). Which hypothesis test can be deployed? 1 Proportion test 1 Sample t test Paired t test 1 Sample z testQ. You want to create and maintain an organized and clean workplace. Which of the tools is best suited for this? 5S Kaizen Six Sigma FMEAQ. In which of the following charts will the Lower Control Limit (LCL) not be artificially set to zero, if the calculation of LCL gives a negative value? p chart c chart X-bar chart np chartQ. The Alternate Hypothesis usually represents ____________ the theory the researcher would like to prove the preconceived ideas of the researcher the perceptions from the sample data All the aboveQ. Primary responsibility of the Master Black Belt is _______________ Allocation of resources for projects Coach Six Sigma GB’s and BB’s Provide process expertise Reward successful projectsQ. ___________ is a Japanese term for “change for improvement” or improving processes through small incremental steps. Kanban Kaizen Ishikawa GembaQ. Turnaround time (TAT) data collected shows normal distribution with a mean of 5 and a standard deviation of 1. What are the chances that the TAT will be between 4 and 6? 68% 95% 99% Not enough information to calculateQ. 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 approachQ. With respect to a Balanced Scorecard, which of the following is NOT true? It includes only financial metrics It enables organizations to focus on their vision and strategy and translate them into actions It is a combination of leading and lagging metrics Balanced scorecard approach can be used for selection of project metricsQ. Which of the following is a “living” document? Project Charter Process Map Process FMEA All the aboveQ. Likert-type data is an example of ________________ Continuous data Nominal data Ordinal data Binary dataQ. Targets for conflicting CTQ's from a QFD can be optimized to get the optimal output using which of the following tools? Design of Experiments De Bono six thinking hats Brainstorming Pugh MatrixQ. 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 riskQ. A call center monitors the count of daily abandoned calls. The number of calls received varies on a daily basis. Which of the following is an appropriate control chart to use? U chart I-MR chart NP chart P chartQ. Quality team tracks the number of items that get rejected in the daily audits. This data follows ______________ Normal distribution Poisson distribution Binomial distribution Discrete-Uniform distributionQ. Which of the following statement 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 specificationsQ. Which of the following statement is true? A low detection rank indicates higher chance of detection Higher chance of detection reduces the severity rank High severity means that the probability of failure occurring is high Improving detection will bring down the occurrence rankQ. If the p-value is less than the significance level, then _________ We do not have enough evidence to reject the null hypothesis We reject the alternate hypothesis The results are statistically significant The results are practically significantQ. In an Interrelationship diagram, the box that has the most outgoing arrows is _________________ called the “Driver” often a key cause of the problem a potential area for initiating a project all of the aboveQ. Leading and managing Six Sigma projects is a primary responsibility of ___________ Black Belt Project team members Champion Master Black BeltQ. Calculate the main effect of factor “B” for the below. 65 -65 5 -5Q. Which of the following is NOT matched correctly? Scope: Provides project limitations with respect to process, time, budget, etc. Business case: Contains the role and responsibilities of the project team members Problem statement: Highlights the pain area Timelines: Provides expected time for completion of major milestonesQ. Which of the following does NOT warrant an action? Process in statistical control and meets specifications Process not in statistical control but meets specifications Process in statistical control but does not meet specifications Process not in statistical control and does not meet specificationQ. The disadvantage of using Pugh Matrix is ___________ A datum is required to create the matrix Each alternative is compared to the datum but not to other alternatives The extent of bettering or worsening is not factored in the calculations All the aboveQ. A research and development lab wanted to check the effectiveness of three types of fabric stain removers (A, B & C). They recorded the time required for 50 samples for each of the stain removers. What hypothesis test can the research team consider to understand if one of the products is better than the others? (The time required to remove stains follows normal distribution) One-way ANOVA Two-way ANOVA Nested ANOVA Chi-square testQ. 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 aboveQ. Which of the following combinations is incorrect? Nominal (Binary) data from appraisers – Fleiss’ Kappa statistics Ordinal data from appraisers - Kendall’s coefficient of concordance Gage R&R- % Team accuracy None of the aboveQ. Which of the following is true for a standard normal distribution? Mean = 0, Standard deviation = 1 Mean = 1, Standard deviation = 1 Mean = 0, Standard deviation = 0 Mean = 1, Standard deviation = 0Q. The project closure and benefit realization needs to be signed off by _______ Project Sponsor and SME Process Owner and Black Belt Financial Analyst and Master Black Belt Project Sponsor and Financial AnalystQ. A company has hired a Master Black Belt to conduct in-house Black Belt trainings. The MBB conducts one training per month. The training is 15 days long. The MBB generates reports and dashboards for the rest of his work time. Which of the wastes in Lean does it represent? Over production Over processing Under Utilized Human Potential MotionQ. A sales team in a company is doing a project on improving the days outstanding on invoices to customers. We would not want the team to achieve lower days outstanding (lower the better) by offering discounts on the invoices. What will be a suitable secondary metric? Average days outstanding Average discount offered Customer satisfaction levels Average accounts receivableQ. A production manager would like to know whether there is an association between the shift (1/2/3) and the machine used (1 vs 2) with respect to defective items produced. An appropriate hypothesis test would be? 2 Proportion test Chi-Square test 2 Sample t test Mann Whitney testQ. Control charts help us in all the following, EXCEPT: Validate that the process has improved Determine presence of special causes Identify cause of non-conformities Monitor a process with timeQ. Difference between p-chart and np-chart is _____________ p-chart is for defectives data while np-chart is for defects data p-chart plots proportion of defects while np-chart plots counts of defects p-chart is used for defectives data with fixed sample size, while np-chart is for variable sample size p-chart is used for defectives data with variable sample size, while np-chart is for fixed sample sizeQ. Control limits of which charts often appear ragged? np-chart, p-chart, c-chart c-chart, u-chart np-chart, c-chart p-chart, u-chartQ. DMAIC is NOT a suitable methodology if ___________ the problem is chronic causes are not clearly understood we are designing a new process optimal solution is not knownQ. For a process in control, what is the theoretical probability that a single point on the X-bar chart will fall between the mean and plus one sigma? 0.68 0.34 0.15 0.50Q. Which one of the following is not a primary responsibility of the process owner? Provide process knowledge Review and approve changes Implement change and ensure sustenance Approve completed projectsQ. Assuming the costs of investment are equal among the various projects, the project with the __________ IRR would probably be considered the best and be undertaken first. Lowest Highest Negative ZeroQ. “Six Sigma” 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 aboveQ. What is the probability of finding a real difference if beta=10%? 90% 10% 5% 95%Q. Which of the following statement 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 0.001 DPMO Six Sigma tools can also be used when one is not doing a six sigma projectQ. Six Sigma Level can be achieved by having _____________ less than 3.4 defects per million opportunities (after adjusting for the sigma shift) six levels of testing before release six times better quality than baseline Six Nines Quality (99.9999%)Q. Which of the following hypothesis test CANNOT be used to compare pre and post improvement performances? 2 sample t test Paired t test 2 Proportion test Anderson Darling Normality testQ. Which of the following is true while doing a Gage R&R study? It is recommended to even pick samples outside the specification limits Randomize the samples during the study Involve appraisers who perform the measurements in the process on a regular basis All of the aboveQ. 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 aboveQ. Measurement value = ? True value True value + Measurement error True value + Systematic error True value + Calculation errorQ. If the data is non normal, then which of the following is/are true with respect to process capabilityi. Process capability can be done using Box-Cox transformation ii. Process capability can be done using Johnson's transformationiii. Process capability cannot be done for non normal dataiv. Identify the non normal distribution that fits the data and perform capability analysis for non normal data i, ii i, ii, iv iii i, ii, iii, ivQ. If the NPV of a prospective project is _______, the project should be accepted Positive Negative Zero More than 1.33Q. _______________helps quality professionals translate broad customer needs into specific, actionable and measurable project metrics. Pugh Matrix Multi-voting SIPOC CTQ drill down treeQ. What is the number of runs that would be required if we had 3 factors, 2 levels, 2 replicates of the corner points, 3 Center points and 1 block? 33 19 27 22Q. Which of the following technique may be used for both solution generation and evaluation? Brainstorming Nominal Group Technique Benchmarking Multi-votingQ. All the statements below are correct, except ___________________ A Cp, Cpk value ≥ 1.33 shows that the process is capable A Cp, Cpk value = 1.0 means that the process barely meets the specification A Cp, Cpk value < 1.0 means that the process is producing units outside the specifications Abnormally high Cp, Cpk (> 3) shows that the specification is very tightQ. Which of the following is the best method to sustain the improvements post successful completion of a project? Mistake Proofing Audits Control Charts Process training every 6 months for all emloyeesQ. Following image displays the Alias Structure for a Fractional Factorial Design. What is the resolution for this design? Resolution III Resolution IV Resolution V Resolution VIQ. A tool that gathers large amounts of language data (ideas, opinions, issues) and organizes them into groupings based on their natural relationships is __________ Affinity diagram Goal means diagram Correlation diagram Interrelationship diagramQ. Which one of the following is NOT correctly matched to its purpose? Repetition: Understand and eliminate experimental errors Center point: Understand the effect of hard-to-change factors Blocking: Technique to eliminate the effect of known noise factors Randomization: Eliminate effects of unknown noise factorsQ. __________ is a graphical tool of choice to show frequency distribution of discrete data. Bar graph Histogram Box plot Scatter plotQ. A process has Zoverall = 1, Zwithin = 1.41 and Zentitlement = 1.53. Which of the following could potentially be the value of Zgoal? 0.50 1.46 1.20 2.00Q. Which of the following statement 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 tendencyQ. In case of “Data Collection”, which of the following has the advantage of high data integrity and opportunity to seek clarification? Mystery shopping Online surveys Focus groups All the aboveTime is Up! Author Recent Posts Vishwadeep Khatri Latest posts by Vishwadeep Khatri (see all) Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. CAPTCHA Code* Notice: It seems you have Javascript disabled in your Browser. In order to submit a comment to this post, please write this code along with your comment: b6b40618b74b70a1fdbd8a574f8b0b02