Students at a virtual school are allowed to sign up for one math class each year. The numbers of students signing up for various math classes for the next school year
are given in the following table:
Grade Geometry Algebra II Pre-Calculus AP Statistics Total
10th 20.7%
10.3%
0.7%
35.2%
11th 6.7%
13.8%
2.8%
12th
1.4%
6.7%
9%
Total 29%
31%
3.4%
10.3%
13.8%
27.6%
12.4%
33.8%
31%
1
A student calculated the joint relative frequency of 10th grade students in geometry as being 71.4%. What did the student actually calculate, and what is the correct
answer?