IMSL C# Numerical Library

XbarS.CapabilityIndexCp Method 

Returns the capability index c_p.

public virtual double CapabilityIndexCp(
   double lowerSpecificationLimit,
   double upperSpecificationLimit
);

Parameters

lowerSpecificationLimit
The lower specification limit.
upperSpecificationLimit
The upper specification limit.

Return Value

The capability index c_p.

Remarks

The capability index is

c_p=\frac{\mathrm{USL}-\mathrm{LSL}}{6\sigma}
where LSL and USL are the lower and upper specification limits and
\sigma=\frac{\bar{s}}{c_{4,n}\sqrt{n}}
.

See Also

XbarS Class | Imsl.Chart2D.QC Namespace