public static double stdev(double[] v) {double r = Double.NaN;if (v!=null && v.length > 1) {r = Math.sqrt( devsq(v) / (v.length - 1) );}return r;}

public static double stdev ( double [ ] v ) { double r = Double . NaN ; if ( v != null && v . length > 1 ) { r = Math . sqrt ( devsq ( v ) / ( v . length - 1 ) ) ; } return r ; }
public static double stdev(double[] v){double r = double.NaN;if (v != null && v.Length > 1){r = Math.Sqrt(devsq(v) / (v.Length - 1));}return r;}
