ProcessCapabilityIQR Property

public double IQR { get; }

Public ReadOnly Property IQR As Double
	Get

public:
property double IQR {
	double get ();
}

member IQR : float with get

There are many different ways to compute the inter-quartile range. The original Tukey method, Excel's method by Freund and Perles, Moore and McCabe's method, and Minitab's. This IQR method returns values that will match the Minitab method. The Minitab method uses interpolation to find the upper and lower quartiles before returning the IQR and therefore the IQR is computed from points that may not exist in the data set as has traditionally been the case (before we had computers).