Category: Six Sigma Green Belt 1

Six Sigma Green Belt

Interpret Control Charts? Distinguish between common & special causes using rules for determining stastical control.

 

Multiple Choices:

1. The primary purpose of a control chart is to:

2. Set Specifications and tolerances

3. Compare operations.

4. Determine the stability of a process.

5. Accept or reject a lot of material

2. When a control chart is used on a new process, capability can be assessed at which of the following times?

3. Before the chart is first started

4. After the first ten points are plotted

5. When the plotted points hug the centerline

6. After the process is shown to be in control

3. Precision is best described as:

4. A comparison to a known standard

5. The achievement of expected outgoing quality

6. The repeated consistency of results

7. The difference between an average measurement and the actual value

4. The overall ability of two or more operators to obtain consistent results repeatedly when measuring the same set of parts and using the same measuring equipment is the definition of:

5. Repeatability

6. Precision

7. Reproducibility

8. Accuracy

5. Which of the following conditions must be met for a process to be in a state of statistical control?

6. Most of the product out by the process is in specification.

7. All subgroup averages and rang are within control limits.

8. All variation has been completely removed

9. Previously optimal process settings are used.

6. Which of the following measures of dispersion is equal to the sum of deviations from the mean squared divided by the sample size?

7. Range

8. Standard deviation

9. Variance

10. Mode

7. An X and R chart is used to:

8. Indicate process variation

9. Specify design Limits

10. Interpret costs

11. Identify customer expectations

8. Which of the following is the most useful graphical tool for promoting and understanding the process of capability?

9. A flowchart

10. A histogram

11. An affinity diagram

12. An Ishikawa diagram

9. The type of chart that presents the value of items in descending order is a:

10. Histogram

11. Pareto chart

12. U chart

13. Cusum chart

10. Measures of which of the following provide attributes data?

11. Temperature in degrees

12. Attendance at meetings

13. Weight in pounds

14. Length in metric units

11. The fraction of nonconforming products is plotted on which of the following types of control chart?

12. P chart

13. U chart

14. Np chart

15. C chart

12. A cause and effect diagram is a useful tool for doing which of the following?

13. Determining the flow of a process

14. Detecting shifts in a process

15. Developing theories based on symptoms

16. Arranging theories by defect count

13. Which of the following statistics would best describe the central tendency of a sample of data?

14. Mode

15. Mean

16. Standard deviation

17. Range

14. Which of the following type of tools or techniques is considered qualitative?

15. Histogram

16. Frequency distributions

17. Pareto chart

18. Process observations

15. Out of the following which technique is most useful in narrowing issues and limiting discussion?

16. Brainstorming

17. Quality function deployment

18. Cause and effect analysis

19. Mutilating

16. In statistics, an estimation error that is persistent or systematic is called:

17. Bias

18. Sensitivity

19. Random

20. Shift

17. For a normal distribution, two standard deviation on each side of the mean would include what percentage of the total population:

18. 47%

19. 68%

20. 95%

21. 99%

18. If a distribution is normal, u=50 s=15, what percentage of data will be less than 30?

19. 59.18%

20. 40.82%

21. 9.18%

22. 1.33%

19. A company is receiving an unusually high number of returns from various customers. The first step in investigating the problem would be to

20. Check the inspection records

21. Establish the correlation of the returns to shipments

22. Brainstorm the potential causes

23. Classify the returns by type and degree of serious

20. Which of the following is the best definition of a flow chart?

21. A diagram used to structure ideas into useful categories

22. An illustration used to analyze variation in a process

23. A picture used to separate steps of a process in sequential order

24. An analytical tool used to clarify opposing aspects of a desired change

21. Which of the following activities would NOT contribute to the effective functioning of a team?

22. Eliminating unnecessary activities

23. Development team performance measures

24. Defining process in detail

25. Monitoring each member’s performance

22. What is the standard deviation of the population-10, 4, 16, 12, and 8?

23. 4.00

24. 4.47

25. 16.00

26. 20.00

23. Which of the following tools would be most appropriate for collecting data to study the symptoms of

a problem?

1. Check sheet

2. Flow diagram

3. Force-field analysis

4. Activity network diagram

24. Which of the following measures is a sufficient statistic for the parameter u?

25. Median

26. Mid-range

27. Mean

28. Mode

25. Positional, cyclical, and temporal variations are most commonly analyzed in:

26. SPC charts

27. Multi-vari charts

28. Cause and effect diagram

29. Run charts

26. Which of the following describes the deming method for continuous improvement?

27. Cost of quality analysis

28. Process map

29. Tree Diagram

30. Plan-do-check-act cycle

27. In analysis of variance, which of the following distribution is the basis for determining whether the variance estimates are all from the same population?

28. Chi square

29. Students

30. Normal

31. F

32. Which of the following statement best describes the set of value of a random variable?

33. It is finite.

34. It is an interval

35. It can be discrete or continuous.

36. It can be tracked by using control charts or scatter plots.

29. Which of the following is the best description of randomization?

30. A technique used to increase the precision of an experiment

31. A means of assuring representative sampling

32. The repetition of an observation or measurement

33. The relationship between two or more variables

30. When the order of items is not important, which of the following method is used to determine the number of sets and subsets of items?

31. Combination

32. Permutation

33. Factorization

34. Simulation

31. Scatter diagrams are best described as:

32. Histograms.

33. Correlation analysis.

34. Pareto analysis.

35. Ishikawa diagrams.

32. A __________ is created to determine customers of a specific process.

33. Pareto chart

34. Flow diagram

35. Cause and effect diagram

36. Scatter diagram

33. A production line uses signs at specific points on the line to indicate when components or raw materials need to be replenished. This practice is an example of:

34. Kanban

35. Poka-yake

36. Checkpoints

37. Hoshin

34. Which of the following is a good tool for planning cycle time reduction and concurrent operations?

35. A timeline

36. A Pareto diagram

37. An X and R chart

38. A PERT chart

35. Attribute and variable data are best described as which of the following?

36. Counted values measured values

37. Counted values visual features

38. Measured values counted values

39. Visual features counted values

36. All of the following are common ways for people to react to conflict except:

37. Competing

38. Collaborating

39. Avoiding

40. Sabotaging

37. A quality manager has chosen to survey customer satisfaction by taking samples based on the categories of frequency of use, categories of use, and demographic. This technique is known as

38. Random sampling

39. Data collection

40. Stratification

41. Customer classification

38. Which of the following actions is Not used to reduce process cycle time?

39. Analyzing current processes

40. Reducing queue times

41. Setting priorities

42. Implementing activity-based costing

39. A company’s accounts payable department is trying to reduce the time between receipt and payment of invoices and has recently completed a flowchart. Which of the following tool is the next to be used by them?

40. Fishbone diagram

41. Scatter diagram

42. Box and whisker plat

43. Histogram

40. In a manufacturing company, the machine shop is what kind of customer in relation to the Human Resource department?

41. Intermediate

42. Hidden

43. External

44. Internal

1. Describe how QFD fits into the overall DFSS process.

2. What is interrelationship Digraph? Explain it with example.

3. Find the area under the standard normal curve between +1.50 standard deviations and +2.50 standard deviations.

4. Define terms related to One-Way ANOVA and interpret their results & data plots.

5. Define & describe the use of Rational Sub grouping.

1. Suppose you are cooking steak for 100 people, & the current approval rating is 75% acceptable. You want to know the affect of different methods and approaches to see how the overall approval or “yield” is affected. By using the Full Factorial method explain how the overall approval or “yield” is affected.

2. Interpret Control Charts? Distinguish between common & special causes using rules for determining stastical control.

 

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