 If a calibrated person is asked a large number of such questions, they will get about as many correct as they expected.An uncalibrated person who is systematically overconfident may say they are 90% confident in a large number of questions where they only get 70% of them correct.On the other hand, an uncalibrated person who is systematically underconfident may say they are 50% confident in a large number of questions where they actually get 70% of them correct.