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Statistics.InterQuartile Method
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InterQuartile range.

Syntax
C#
Visual Basic
public static double InterQuartile([In] TVec X, TPercentileMethod Method);
Parameters
Parameters 
Description 
[In] TVec X 
Data. An exception is raised if X is complex. 
TPercentileMethod Method 
Defines one of the available methods for calculating percentile. Software packages use different methods to calculate percentiles. For example, Excel uses pctMethodNMinus, while on the other hand, NCSS's default method is pctMethodNPlus. 
Returns

the interquartile range of all X vector elements. The interquartile range is defined as a difference between 75th percentile and 25th percentile of given values.

See Also
Example

Calculate the IQR for given values.

using Dew.Math; using Dew.Stats.Units; using Dew.Stats; namespace Dew.Examples { private void Example() { Vector a = new Vector(0); a.SetIt(false, new double[] {2,0.1,3,4}); double res = Statistics.InterQuartile(a,TPercentileMethod.pctMethodNMinus); // Res = 1.725 //Excel convention } }
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