?

GMAT®

Free Version

Upgrade subject to access all content

Difficult

AP Exam Scores: How Many Scores of 5 Needed?

GMAT-ECXJH0

AP Exam Scores 2013

In the sortable table below, click on the column title to organize the table by that column's values.

Subject total tests mean stdev # 3 or higher % 3 or higher
Art Hist 22,723 2.85 1.29 13,763 60.6
Biology 203,189 2.88 1.01 128,646 63.3
Calculus AB 282,814 2.96 1.56 167,833 59.4
Calc BC Sub 104,483 4.12 1.24 91,094 87.2
Chemistry 140,006 2.92 1.47 82,789 59.1

Offered in many high schools, Advanced Placement programs expose students to college-level material.The College Board administers Advanced Placement Exams in the spring of each school year. Students earning a score of 3 or higher (out of a maximum of 5) on AP exams can earn college credit. The distribution of individual AP test scores in a single subject is bell-shaped.

The College Board describes student readiness to progress to the next course in the course sequence based on AP exam scores as follows:

5 = extremely well qualified
4 = well qualified
3 = qualified
2 = possibly qualified
1 = no recommendation

A score of 3 is considered a "passing" grade.

Suppose an additional group of students takes the AP Biology exam in 2013 and all students earn a score of 5. These score are added to the previous scores in the table above. How many scores of 5 need to be added to the previous scores in order for the new mean to exceed 3?

A

9,685

B

12,192

C

24,383

D

24,142

E

68,645