code: public static double kurtosisSE(FlatDataCollection flatDataCollection) {
  	    int n = count(flatDataCollection);
          if(n<=3) {
              throw new IllegalArgumentException("The provided collection must have more than 3 elements.");
          }
          
          double kurtosisSE = Math.sqrt(24.0/n);
          
          return kurtosisSE;
      }
docs: Calculates Standard Error of Kurtosis. Uses a formula similar to SPSS as
  suggested by http://suite101.com/article/kurtosis-and-how-it-is-calculated-by-statistics-software-packages-a235641
  
  @param flatDataCollection
  @return