* the arithmetic mean of the population.
   *
   * @param values a nonempty series of values, which will be converted to {@code double} values
   *     (this may cause loss of precision for longs of magnitude over 2^53 (slightly over 9e15))
   * @throws IllegalArgumentException if {@code values} is empty
   * @deprecated Use {@link Stats#meanOf} instead, noting the less strict handling of non-finite
   *     values.
   */
  @Deprecated