Illuminate\Database\Query\Builder::average PHP 메소드

    public function average($column)
    {
        return $this->avg($column);
    }

 /**
  * Alias for the "avg" method.
  *
  * @param string $column
  * @return float|int 
  * @static 
  */
 public static function average($column)
 {
     return \Illuminate\Database\Query\Builder::average($column);
 }