assertThat(Stats.meanOf(Longs.toArray(LONG_MANY_VALUES)))
        .isWithin(ALLOWED_ERROR * LONG_MANY_VALUES_MEAN)
        .of(LONG_MANY_VALUES_MEAN);
  }

  public void testToByteArrayAndFromByteArrayRoundTrip() {
    for (Stats stats : ALL_STATS) {
      byte[] statsByteArray = stats.toByteArray();

      // Round trip to byte array and back