IMSL C# Numerical Library

XbarR.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{R}}{d_{2,n}\sqrt{n}}
.

See Also

XbarR Class | Imsl.Chart2D.QC Namespace