public function dataProviderForPMF() { return [[5, 0.1, 0.06561], [5, 0.2, 0.08192000000000001], [1, 0.4, 0.4], [2, 0.4, 0.24], [3, 0.4, 0.144], [5, 0.5, 0.031512], [5, 0.09, 0.061717], [1, 1, 1], [2, 1, 0]]; }