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Portable Network Graphic  |  1994-04-29  |  61KB  |  816x1056  |  8-bit (255 colors)
Labels: reckoner | sky
OCR: Control Charts for Variables have the following character istics: Each point represents summary statistic computed from subgroup sample of measurements quality characteristic .The vertical axis of contro chart is scaled in the same units as the summary statistic The horizontal axis contro chart identifies the subgroup samples .The center line on control chart indicates the average (expected) value of the summar statistic when the process in statistical control. .The upper and lower control limits labeled UCL and LCL, indicate the range of variation to be expected in the summary statistic when the process is in statistical control. Control charts for variables are classified according to the subgroup summary statistic plotted on the chart which are the Mean, the Range and the Standard Devia ...