MathPHP\Statistics\DescriptiveTest::testStandardDeviationNullWhenEmptyArray PHP 메소드

testStandardDeviationNullWhenEmptyArray() 공개 메소드

    public function testStandardDeviationNullWhenEmptyArray()
    {
        $this->assertNull(Descriptive::standardDeviation(array()));
    }
DescriptiveTest