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Fundamentals of Quality Control and Improvement, 4th Edition by Amitava Mitra

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8Control Charts for Attributes

  1. 8-1 Introduction and Chapter Objectives
  2. 8-2 Advantages and Disadvantages of Attribute Charts
  3. 8-3 Preliminary Decisions
  4. 8-4 Chart for Proportion Nonconforming: p-Chart
  5. 8-5 Chart for Number of Nonconforming Items: np-Chart
  6. 8-6 Chart for Number of Nonconformities: c-Chart
  7. 8-7 Chart for Number of Nonconformities Per Unit: u-Chart
  8. 8-8 Chart for Demerits Per Unit: u-Chart
  9. 8-9 Charts for Highly Conforming Processes
  10. 8-10 Operating Characteristic Curves for Attribute Control Charts
  11. Summary
Symbols
n Constant sample size c Population mean number of nonconformities
ni Sample size of ith sample img Sample average number of nonconformities
g Number of samples or subgroups c0 Specified goal or standard for the number of nonconformities
p Population proportion nonconforming u Population mean number of nonconformities per unit
img Sample proportion nonconforming img Sample average number of nonconformities per unit
img Standard deviation of img D Number ...

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