[mlpack-git] [mlpack/mlpack] Descriptive Statistics command-line program (#742)

[Keon Kim]

> + * @param rowMean Mean of the given vector.
> + * @return Skewness of the given vector.
> + */
> +double Skewness(const arma::rowvec& input,
> +    const double& rowStd,
> +    const double& rowMean,
> +    const bool population)
> +{
> +  double skewness = 0;
> +  double S3 = pow(rowStd, 3);
> +  double M3 = SumNthPowerDeviations(input, rowMean, 3);
> +  double n = input.n_elem;
> +  if (population)
> +  {
> +    // Calculate Population Skewness
> +    skewness = n * M3 / (n * n * S3);

updated

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