/// <summary> /// Calculate the variance /// </summary> /// <param name="data"></param> /// <returns></returns> static public Complex Variance( Complex[] data ) { Debug.Assert( data != null ); if( data.Length == 0 ) { throw new DivideByZeroException( "length of data is zero" ); } return ComplexStats.SumOfSquares( data ) / data.Length - ComplexStats.Sum( data ); }
/// <summary> /// Calculate the standard deviation /// </summary> /// <param name="data"></param> /// <returns></returns> static public Complex StdDev( Complex[] data ) { Debug.Assert( data != null ); if( data.Length == 0 ) { throw new DivideByZeroException( "length of data is zero" ); } return ComplexMath.Sqrt( ComplexStats.Variance( data ) ); }
/// <summary> /// Calculate the mean (average) /// </summary> /// <param name="data"></param> /// <returns></returns> static public Complex Mean( Complex[] data ) { return ComplexStats.Sum( data ) / data.Length; }