docs: @Deprecated
    // com.google_voltpatches.common.math.DoubleUtils
    @GwtIncompatible
    public static double mean(Iterator<? extends Number> values) {
      checkArgument(values.hasNext(), "Cannot take mean of 0 values");
      long count = 1;
      double mean = checkFinite(values.next().doubleValue());
      while (values.hasNext()) {
        double value = checkFinite(values.next().doubleValue());
        count++;
        // Art of Computer Programming vol. 2, Knuth, 4.2.2, (15)
        mean += (value - mean) / count;
      }
      return mean;
    }