MathPHP\Probability\Distribution\Continuous\ChiSquaredTest::testPDF PHP Метод

public testPDF ( $x, integer $k, $pdf )
$k	integer

    public function testPDF($x, int $k, $pdf)
    {
        $this->assertEquals($pdf, ChiSquared::PDF($x, $k), '', 1.0E-5);
    }

ChiSquaredTest