Statistical Process Control(英文版)(ppt 23页)
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资料简介：
Statistical Process Control内容提要：
Control Charts
1、Prevent production of excessive number of defects - look for causes of variability
2、A time-ordered plot of sample statistics
3、Control limits - determine the difference between random and assignable variation - usually 3
4、Each new sample statistic is plotted and compared to the control limits
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