public function dataProviderForCohensF()
{
return [[0.06550008026971001, 0.07009104964783], [0.01462379847531, 0.01484082774953], [0.18360655737705, 0.22489959839358], [0.00901910292791, 0.009101187474509999], [0.25, 0.33333333], [1.0E-5, 1.0E-5], [0.99999, 99999.00000046]];
}