code: function genericVariance(ddof, sequence) {
    const length = sequence.length;
  
    if (!length)
      throw Error('talisman/stats/inferential#variance: the given list is empty.');
  
    // Returning 0 if the denominator would be <= 0
    const denominator = length - ddof;
  
    if (denominator <= 0)
      return 0;
  
    const m = mean(sequence);
  
    let s = 0;
  
    for (let i = 0; i < length; i++)
      s += Math.pow(sequence[i] - m, 2);
  
    return s / denominator;
  }
docs: Function computing the sample variance of the given sequence.
  
  @param  {number}  ddof     - Delta degrees of freedom.
  @param  {array}   sequence - The sequence to process.
  @return {number}           - The variance.
  
  @throws {Error} - The function expects a non-empty list.