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8 Cards in this Set
- Front
- Back
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How does Acceptance Sampling work? |
probability that the rate of defective items in a batch is less than a specified level |
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What does Acceptance Sampling determine? |
e.g. population: 500 sample: 25 defective sample items: 0 result: probabability is 93% that population deviation rate < 10% |
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What does a P chart show? |
percentage of defects (acceptable/not acceptable) in a sample |
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What does a C chart show? |
defects per item |
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what does a R chart show? |
the range of dispersion of a variable (size or weight) where the center line is the overalll mean |
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What does a X-bar chart show? |
the sample mean for a variable where the center line is the average range |
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How are the expected cost in a cost benefit analysis calculated? |
Probability of being out of control x Cost of corrective action + Probability of being in control x Investigation cost |
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What is the Fishbone diagram good for? |
to study causation when no single cause for a problem can be identified |
