protected function col_frequency($response) {
        if (!$this->s) {
            return '';
        }
        return $this->format_percentage($response->totalcount / $this->s);
    }
protected function col_frequency($response) {
        if (!$this->s) {
            return '';
        }
        return $this->format_percentage($response->totalcount / $this->s);
    }
protected function col_frequency ( $ response ) { if ( ! $ this -> s ) { return '' ; } return $ this -> format_percentage ( $ response -> totalcount / $ this -> s ) ; }
The frequency with which this response was given.
@param object $response contains the data to display.
@return string contents of this table cell.
The frequency with which this response was given .