code: public function expecting()
      {
          $possibilities = count($this->samples);
          $orderedByOccurance = array_count_values($this->samples);
          array_multisort($orderedByOccurance, SORT_DESC);
  
          $probabilities = [];
  
          foreach ($orderedByOccurance as $item => $value) {
              $probabilities[$item] = $value / $possibilities;
          }
  
          return $probabilities;
      }
docs: Makes a best guess on the number of occurances.
  
  @return mixed