Question

The box­and­whisker plots below represent the scores for pre­ and post­written tests for applicants obtaining their driver’s licenses. A passing score is 70%. Which of the following is best supported by the information in the graphs? A. Exactly 25% more applicants passed the post­test than the pre­test. B. Exactly 50% more applicants scored below the passing score on the pre­test than on the post­test. C. Of all the applicants that passed the pre­test, only 25% scored higher than a 90. D. Of all the applicants that passed the post­test, only 50% scored between a 70 and an 80.

Answer 1

C. Of all the applicants that passed the pre-test, only 25% scored higher than a 90.