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C Chart Calculations

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C Chart Calculations

Plotted statistic

the count of occurences of a criteria of interest in a sample of items

Center Line

knowctr00000020.gif

where m is the number of groups included in the analysis.

UCL , LCL (Upper and Lower Control Limit)

knowctr00000021.gif

knowctr00000022.gif

where n is the sample size and c-bar is the Average count


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