public function testHedgesG($μ₁, $μ₂, $s₁, $s₂, $n₁, $n₂, $expected) { $g = EffectSize::hedgesG($μ₁, $μ₂, $s₁, $s₂, $n₁, $n₂); $this->assertEquals($expected, $g, '', 1.0E-5); }