Chap010 - Chapter 10 - Quality Control Chapter 10 Quality...

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Chapter 10 - Quality Control Chapter 10 Quality Control True / False Questions 1. Approving the effort that occurs during the production process is known as acceptance sampling. FALSE Difficulty: Medium TLO: 1 Taxonomy: Knowledge 2. Statistical Process control is the measurement of rejects in the final product. FALSE Difficulty: Medium TLO: 1 Taxonomy: Knowledge 3. The optimum level of inspection occurs when we catch at least 98.6 percent of the defects. FALSE Difficulty: Medium TLO: 1 Taxonomy: Knowledge 4. The optimum level of inspection minimizes the sum of inspection costs and the cost of passing defectives. TRUE Difficulty: Easy TLO: 1 Taxonomy: Knowledge 10-1
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Chapter 10 - Quality Control 5. Processes that are in control eliminate variations. FALSE Difficulty: Medium TLO: 2 Taxonomy: Knowledge 6. High-cost, low-volume items often require careful inspection since we make them so infrequently. TRUE Difficulty: Medium TLO: 1 Taxonomy: Knowledge 7. Low-cost, high-volume items often require more intensive inspection. FALSE Difficulty: Medium TLO: 1 Taxonomy: Knowledge 8. A lower control limit must by definition be a value less than an upper control limit. TRUE Difficulty: Easy TLO: 2 Taxonomy: Knowledge 9. Attributes need to be measured, variable data can be counted. FALSE Difficulty: Medium TLO: 2 Taxonomy: Knowledge 10-2
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Chapter 10 - Quality Control 10. The amount of inspection we choose can range from no inspection at all to inspecting each item numerous times. TRUE Difficulty: Easy TLO: 1 Taxonomy: Knowledge 11. The amount of inspection needed is governed by the costs of inspection and the expected costs of passing defective items. TRUE Difficulty: Easy TLO: 1 Taxonomy: Knowledge 12. The purpose of statistical process control is to ensure that historical output is random. FALSE Difficulty: Medium TLO: 2 Taxonomy: Knowledge 13. A process that exhibits random variability would be judged to be out of control. FALSE Difficulty: Medium TLO: 2 Taxonomy: Knowledge 14. If a point on a control chart falls outside one of the control limits, this suggests that the process output is non-random and should be investigated. TRUE Difficulty: Easy TLO: 2 Taxonomy: Knowledge 10-3
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Chapter 10 - Quality Control 15. An x-bar control chart can only be valid if the underlying population it measures is a normal distribution. FALSE Difficulty: Hard TLO: 2 Taxonomy: Knowledge 16. Concluding a process is out of control when it is not is known as a Type I error. TRUE Difficulty: Hard TLO: 2 Taxonomy: Knowledge 17. An R value of zero (on a range chart) means that the process must be in control since all sample values are equal. FALSE Difficulty: Medium TLO: 2 Taxonomy: Knowledge 18. Range charts are used mainly with attribute data. FALSE
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This note was uploaded on 12/17/2011 for the course OPER 501 taught by Professor Fsafas during the Spring '11 term at Manor.

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Chap010 - Chapter 10 - Quality Control Chapter 10 Quality...

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