code: private void computeMean() {
  		meanError = 0;
  
  		int size = allPoints.size();
  		for (PointIndex<Point> inlier : allPoints) {
  			Point pt = inlier.data;
  
  			meanError += modelError.computeDistance(pt);
  		}
  
  		meanError /= size;
  
  	}
docs: Computes the mean and standard deviation of the points from the model