docs: public static double Skewness(int[] values, double mean, double stdDeviation){
          double n = 0;
          for (int i = 0; i < values.length; i++)
              n += values[i];
          
          double part1 = n / (n - 1) * (n - 2);
          
          double part2 = 0;
          for (int i = 0; i < values.length; i++) {
              part2 += Math.pow((i - mean) / stdDeviation, 3) * values[i];
          }
          
          return part1 * part2;
      }