诺机亚培训教材(ppt 55页)(英文)
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资料简介：
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1、Variation, Tolerances and Dimensional Control
2、Population, Sample and Normal Distribution
3、Cp and Cpk Concept
4、Use of the NMP Data Collection Spreadsheet
5、Confidence of Cpk
Common Causes:
Causes that are implemented in the process due to the design of the process, and affect all outcomes of the process
Identifying these types of causes requires methods such as Design of Experiment (DOE), etc.
Special Causes:
Causes that are not present in the process all the time and do not affect all outcomes, but arise because of specific circumstances
Special causes can be identified using Statistical Process Control (SPC)
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