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Portable Network Graphic  |  1994-04-29  |  4.3 KB  |  454x205  |  1-bit (2 colors)
   ocr: Control Charts for Variablesave the following characteristics: DEach point represents a summary, statistic computed from a subgroup san measurements of a quality characteristic. OThe vertical axis ofa control chart is scaled in the same units as the sumn "OThe horizontal axis of a control chart identities the subgroup samples. OThe center line on a control chart indicates the average (expected) value 01 statistic when the process is in statistical control. "OThe upper and lower control limits, labeled UCL and LCL, indicate the rang to - be expected in the summary statistic when the process IS ...