Question health and statistics

Once enough candidates have answered a question, GyaniX calculates how many got it right (difficulty), whether strong candidates do better on it than weak ones (discrimination), and how often it is shown (exposure). Questions are flagged too easy, too hard, weak or negative discrimination, or over-exposed.

Small samples

With too few answers GyaniX shows no statistic rather than a misleading one. Flags help people decide; GyaniX does not retire questions automatically.