Monday, November 1, 2021

Lean six sigma training


#181

Back in college third year, KPMG offered a 2-day workshop on Lean six-sigma training. Here are some of the things I learned about:

Day 1:
  1. Systematic, data-driven approach - problem-solving
  2. Convert business problem and solution to statistical problem and solution (infer from business)
  3. Problem - chronic/long-lasting: addressing it will be impactful
  4. D: Define or identify problem statement
  5. M: Measure or identify factors influencing barriers to achieving the goal
    1. Factors: people, technology, environment competitors, past experience
  6. Assumption - all people using the process produce the same results
  7. A: Analyze - regression analysis
  8. Bell curve - depicts average 
  9. Y - lagging indicator - CTQ - critical to quality (people: skill, process: variation, tech: compliance)
  10. X - leading indicator
  11. Bill Smith - production engineer - came up with MLAC
    1. Michael Harry + Bill Smith - evaluation of six sigma
  12. Six sigma: 3.4 maximum defects per million opportunities
  13. Requirements -> design -> developments -> validation (CTQ)
  14. Paradigm shift:
    1. From quality being the effect to being the cause
    2. Presence of process mandatory to maintain consistency
    3. As-is -> to be: comply with ISO
  15. Role of management: change process in lieu of people
  16. Six sigma approaches (2)
    1. DMAIC - existing process
      1. D: customer expectations
        1. Select performance characteristics critical in meeting customer requirements
      2. M: defects frequency
        1. Create + validate measurement system
      3. A: why, when, where
        1. Identify sources of variation from performance objectives
      4. I: fix
        1. Discover process relationships + establish new procedures
      5. C: stay fixed
        1. Monitor implemented improvements to maintain gains
    2. DMADV - for new process
  17. Affinity diagram
  18. Kano model
  19. Project scoping tool - in/out frame
  20. GRPI checklist - goals, roles, processes, interpersonal relationships
  21. VOC - voice of customer - customer comment, issue, critical requirement
  22. SIPOC - supplier, input, process, output, customer
  23. Levels of process mapping
Day 2:
  1. Deliverables
  2. Fishbone diagram
  3. 7Ms - machine, method, measurement, man, mother nature, material, money
  4. 5Ps - promotion, price, people, processing, packaging
  5. Cost-benefit analysis
  6. Control impact matrix
  7. Data collection plan, sampling
  8. MSA - measurement system analysis
  9. Fleiss’ Kappa
  10. Kendall’s coefficient of concordance 
  11. Minitab, box plot, run chart, rolled throughput yield, pareto chart, work-value analysis, cycle-time analysis, hypothesis testing - t test, anova, chi-square, TRIZ - theory of inventive problem-solving
  12. Process management system
    1. Documentation and standardization
    2. Monitoring
    3. Response plan
  13. Control variables
    1. Mistake 1 - tampering
    2. Mistake 2 - under-reacting
  14. Effectiveness of implemented solution 
    1. KPI - key-performance indicator
    2. KRA - key responsibility area
  15. Retrospection - project closure

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