docs: public static MutableDoubleTuple standardize(
          DoubleTuple t, MutableDoubleTuple result)
      {
          result = DoubleTuples.validate(t, result);
          double mean = arithmeticMean(t);
          double standardDeviation = standardDeviationFromMean(t, mean);
          double invStandardDeviation = 1.0 / standardDeviation;
          return DoubleTupleFunctions.apply(
              t, (a) -> ((a - mean) * invStandardDeviation), result);
      }