MathPHP\Statistics\CorrelationTest::testDescribe PHP Метод

    public function testDescribe()
    {
        $X = [1, 2, 3, 4, 5];
        $Y = [2, 3, 4, 4, 6];
        $stats = Correlation::describe($X, $Y);
        $this->assertTrue(is_array($stats));
        $this->assertArrayHasKey('cov', $stats);
        $this->assertArrayHasKey('r', $stats);
        $this->assertArrayHasKey('R2', $stats);
        $this->assertArrayHasKey('tau', $stats);
        $this->assertArrayHasKey('rho', $stats);
        $this->assertTrue(is_numeric($stats['cov']));
        $this->assertTrue(is_numeric($stats['r']));
        $this->assertTrue(is_numeric($stats['R2']));
        $this->assertTrue(is_numeric($stats['tau']));
        $this->assertTrue(is_numeric($stats['rho']));
    }