If Betty and Ann form a discordant pair on the variables 1^st exam grade and 2^nd exam grade, then A) one of them got the better grade on both exams B) one of them got the better grade on the 1^st exam but the other got the better grade on the 2^nd exam C) they both got the same grade on one of the exams D) one of them got the same grade on both exams

Question

Quizplus · Accepted Answer

A discordant pair on two variables means that their ranks on the two variables are not in agreement. In this case, Betty and Ann form a discordant pair on their exam grades. So, one of them must have got the higher rank on one exam and the lower rank on the other exam. This eliminates options A and D. Option C is also incorrect as it suggests that they got the same rank on both exams which would be a concordant pair. Therefore, the best choice is B which says that Betty got the better grade on the 1^st exam and Ann got the better grade on the 2^nd exam, which satisfies the conditions of a discordant pair.

If Betty and Ann Form a Discordant Pair on the Variables