private function buildMax(Dataset $dataset): self
    {
        $this->max = new Quartile(max(...$dataset->ordinates()));

        return $this;
    }
private function buildMax(Dataset $dataset): self
    {
        $this->max = new Quartile(max(...$dataset->ordinates()));

        return $this;
    }
private function buildMax ( Dataset $ dataset ) : self { $ this -> max = new Quartile ( max ( ... $ dataset -> ordinates ( ) ) ) ; return $ this ; }
Extract the maximum value from the dataset

@param Dataset $dataset

@return self
Extract the maximum value from the dataset