MathPHP\Probability\Distribution\Continuous\NoncentralTTest::testMeanNAN PHP Method

    public function testMeanNAN()
    {
        $this->assertNan(NoncentralT::mean(1, 1));
        $this->assertNan(NoncentralT::mean(1, 2));
        $this->assertNan(NoncentralT::mean(1, -1));
    }