public static double moment ( FlatDataCollection flatDataCollection , int r , double mean ) { int n = 0 ; double moment = 0.0 ; Iterator < Double > it = flatDataCollection . iteratorDouble ( ) ; while ( it . hasNext ( ) ) { Double v = it . next ( ) ; if ( v != null ) { ++ n ; moment += Math . pow ( v - mean , r ) ; } } if ( n <= 1 ) { throw new IllegalArgumentException ( "The provided collection must have more than 1 elements." ) ; } moment /= n ; return moment ; }
Calculates Moment R if the mean is known .