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Portable Network Graphic  |  1994-04-29  |  68KB  |  816x1056  |  8-bit (253 colors)
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OCR: Control charts for Attributes have the following characteristics: Each point represents summary statistic computed from subgroup sample of measurements of quality characteristic .The vertical axis contro chart is scaled in the same units as the summary statistic The horizontal axis f control chart identifies the subaroup 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 be expected in the summary statistic when the process in statistical control Attribute charts are classified according to the subgroup sample statistic plotted on the cht charts display the proportion of nonconf orming (def fective) items ir su ...