fishbone chart): Identifies many possible causes for an effect or problem and sorts ideas into useful categories. 2. Check sheet: A structured‚ prepared form for collecting and analyzing data; a generic tool that can be adapted for a wide variety of purposes. 3. Control charts: Graphs used to study how a process changes over time. 4. Histogram: The most commonly used graph for showing frequency distributions‚ or how often each different value in a set of data occurs. 5. Pareto chart: Shows
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Chapter 1-17 Operations Management Roberta Russell & Bernard W. Taylor‚ III Organization of This Text: Part I – Operations Management Intro. to Operations and Supply Chain Management: Quality Management: Statistical Quality Control: Product Design: Service Design: Processes and Technology: Facilities: Human Resources: Project Management: Chapter 1 (Slide 5) Chapter 2 (Slide 67) Chapter 3 (Slide 120) Chapter 4 (Slide 186) Chapter 5 (Slide 231) Chapter 6 (Slide 276) Chapter 7 (Slide 321) Chapter
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Quality Without Tears: The Art of Hassle-Free Management. New York: McGraw-Hill‚ 1984. Deming‚ W. Edwards. Out of Crisis. Cambridge‚ Mass.: MIT Center for Advanced Engineering Study‚ 1986. Evans‚ James R.‚ and William M. Lindsay. The Management and Control of Quality. 4th ed. Cincinnati: South-Western‚ 1999. Garvin‚ David A. “Competing on the Eight Dimensions of Quality‚” Harvard Business Review‚ Nov. – Dec.‚ 1987‚ 101 – 10. Garvin‚ David A. Managing Quality. New York: Free Press‚ 1988. 170 • CHAPTER
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Prob. 13-23. Construct - and s-charts and discuss the results. Answer 23. See data and control charts below and spreadsheet Prob.13-23XSWeigh.xls for details. For the Weighrite Corporation‚ the center line‚ CL: = 8.659; CLs : = 7.474 a. Control limits for the - s charts are: ± A3 = 8.659 ± 0.975 (7.474) = 1.372 to 15.946 For the s-chart: UCLs = B4 = 1.716 (7.474) = 12.825 LCLs = B3 = 0 b. The process appears to be in statistical control‚ because values are distributed
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will reinforce the learning that comes from reading the material. What is Six Sigma? P4 Six Sigma is a process based methodology for pursuing continuous improvement. Companies use this methodology to reduce defects in their processes. - What does this stand for and what is it used to measure? P4 Sigma‚ σ‚ is the Greek letter used to measure the variability in the process. Six Sigma stands for Six Standard Deviations from mean. Standard Deviation is a
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|12 |2.97 |0.40 |24 |2.64 |0.97 | Develop appropriate control charts and determine whether there is any cause for concern in the cutting process. Plot the information and look for patterns. Ten eerste moeten we eerst de boven-en ondergrens berekenen voor zowel voor een [pic] chart grafiek en R chart. Voor de grafiek met de gemiddelde inches is [pic] and [pic]: [pic] [pic] [pic] Of (2.236‚
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and flow charts defining their quality control system. Product quality is the responsibility of engineering and manufacturing; quality control and quality assurance is to assist design and manufacturing to ensure product conformance. Boeing periodically reviews internal and supplier procedures. The following list reflects the minimum elements that a supplier’s Quality Assurance function is expected to document and implement: 1. Procedures 2. Records 3. Manufacturing Quality Control 4. Training
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Quality/Process Control In 1924‚ W. A. Shewhart of Bell Telephone Labs developed a statistical chart for the control of product variables Beginning of SQC and SPC. HISTORY of TQM S. Ajit HISTORY of TQM : HISTORY of TQM 1950s‚ W. Edwards Deming was invited to lead the quality movement in Japan W. Edwards Deming‚ who learnt SQC from Shewhart‚ taught SPC & SQC to Japanese engineers and CEO’s S. Ajit HISTORY of TQM : HISTORY of TQM In 1951‚ Joseph Juran published “quality control handbook”
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Compute control limits for a p-chart for this process. Ans 30. Control limits for Yummy Candy Company are as follows: CL = 75/2250 = 0.0333 s = s = = 0.0207 Control limits: UCLp = + 3 s UCLp = 0.0333+ 3(0.0207) = 0.0954 LCLp = - 3 s LCLp = 0.0333 - 3(0.0207) = - 0.0288‚ use 0 31. Thirty-five samples of 25 orders each at the Bakery Bread‚ Inc. were inspected‚ and 25 items were found to be defective. Compute control limits for a p-chart. Ans. 31. Control limits
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quality audit to do which of the following? a) b) c) d) Provide objective evidence that the auditee uses statistical process control (SPC) Expose patterns that are normally difficult to detect Interpret data for a trend chart Create a stratified tally diagram Ref: CBA Study Guide Q2 3. Comparing how a process is actually performed against the documented work instruction for that process is an example of which of the following techniques? a. b. c. d. Quantitative Qualitative Statistical Random sampling
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