MathPHP\Statistics\EffectSizeTest::dataProviderForGlassDelta PHP Method

    public function dataProviderForGlassDelta()
    {
        return [[40, 57.727272727273, 30.763910379179, -0.576236], [3, 4, 1.5811388300842, -0.63245553], [3, 3, 1.5, 0]];
    }