Control Chart Constants Table | Process Capability Calculations

Control Chart Constants
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Statistical constants are used for both variable control charts like the XmR, XbarR and XandS charts and in process capability calculations. These constants are determined based on the subgroup size.

Here is a table of the capability calculation and control chart constants used in the QI Macros SPC Software for Excel.

control chart constants table

Other Capability Analysis and Control Chart Formulas

Cp Cpk formula
XmR chart formula
X bar R chart formula
X and S chart formula
Other histogram and control chart formulas used in the QI Macros

Histograms and Control Charts are just one of the tools included in the QI Macros for Excel SPC Software for Excel.

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