3 ms·How to Tell an Android User from an iOS User 4 points by IBM 13y agolakwn 13y ago28,000 questions? Isn't that a bit of an overkill? Their claims would be much more credible if they had taken their questions from a smaller set.IBM 13y agoVarious combinations of 28k questions. If the study was done properly, they could design similar questions to remove biases.