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13 Cards in this Set
- Front
- Back
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The two types of date involved in quality control are |
variables and attributes |
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"Pass/Fail", and "go/no go" are both examples of: |
attribute data |
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The width of a histogram showing a distribution of data indicates the ____________ of the process that generated the distribution. |
predictability |
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Zanda Corp. has determined that it has too many products returned from customers. Zanda is interested in determining what factors or elements could contribute to the large number of returns. Which of the following quality tools would Zanda use to achieve this objective? |
Fishbone diagram |
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You are involved in the implementation of a quality improvement program. Your immediate goal is to identify what problems you should focus on (ideally you want to focus on those that give you the biggest bang for the buck). Which of the following quality control procedures is the most appropriate? |
pareto analysis |
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The specifications for the diameter of a molded part are 10 mm +/- 0.5 mm. The actual average and standard deviation from 250 parts sampled is 10.1 mm and 0.1 mm respectively. What is Cpk? |
1.34
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The specifications for the diameter of a molded part are 10 mm +/- 0.5 mm. The actual average and standard deviation from 250 parts sampled is 10.1 mm and 0.1 mm respectively. This process can be characterized as: |
capable |
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A firm has an existing process which it would like to use for producing a part it will sell to an industrial customer. The customer requires that defective (out of specification) parts be kept to 3000 parts per million (three-tenths of one percent) or less. A process capability study done on the process revealed that it has a process capability index (Cpk) of 1.33 for this part. What should the firm conclude from the study? |
The process is highly capable, and when operating in control, a very high percentage of output will meet the customer's requirements.
(NOTE: >1 = highly capable) |
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Suppose that you are a process manager in a manufacturing plant, and you suspect that there is a relationship between the room temperature of the plant and the weights of the plastic caps produced by an injection molding process. What quality improvement tool would you use to investigate this claim? |
Scatter diagram |
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The specifications for the diameter of a molded part are 10 mm +/- 0.5 mm. The actual average and standard deviation from 250 parts sampled is 10.1 mm and 0.1 mm respectively. What is Cp? |
1.67 Cp= USL - LSL / 6(sigma) Cp= 10.5 - 9.5 / 6(0.1) = 1.67 |
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The objective of Statistical Process Control (SPC) is to: |
Detect assignable cause variations versus normal random variations in the process |
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Hugging in a control chart usually indicates: |
something is occurring that is masking natural variation (because common variation is always there) |
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The Taguchi methods link process design to: |
process capability |
