public function dataProviderForStandardErrorOfTheMean()
{
return [[[1, 2, 3, 4, 5, 5, 6, 7], 0.7180703308172536], [[34, 6, 23, 12, 25, 64, 32, 75], 8.509317372319423], [[1.5, 1.3, 2.532, 0.43, 0.042, 5.9, 0.9942, 1.549], 0.645903079859], [[453543, 235235, 656, 342, 2235, 6436, 234, 9239, 3535, 8392, 3492, 5933, 244], 37584.225394]];
}