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2013-05-23 12:21
求翻译：The quantity np is the number of units in the subgroup with some particular characteristic, such as the number of nonconforming units. Traditionally, np-charts are used only when subgroup sizes are constant. As the information used is the same as for p-charts with constant subgroup sizes, these two charts are interchan是什么意思？ 待解决
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The quantity np is the number of units in the subgroup with some particular characteristic, such as the number of nonconforming units. Traditionally, np-charts are used only when subgroup sizes are constant. As the information used is the same as for p-charts with constant subgroup sizes, these two charts are interchan
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