Question

A group of seventh graders and a group of teachers at a local middle school were asked how many siblings they each have. The dot plots below show the results. Students Teachers When comparing the shape of the two sets of data, what conclusion can someone draw?
a.The students tend to have fewer siblings than the teachers.

b.The teachers tend to have fewer siblings than the students.

c.Both the students and the teachers have a wide range of siblings.

d.Both sets of data have the same shape.

Answer 1

Answer:

The correct answer is:

a.The students tend to have fewer siblings than the teachers.

Explanation:

As it is possible to appreciate in the fist graphic that represents students, two students do not have siblings, four students have only one sibling, seven students have two siblings, five students have three siblings and only two students have four siblings.

While in the second graphic that represents teachers and the number of siblings they have, it is possible to see that one teacher does not have siblings, three teachers have only one sibling, two teachers have two siblings, four teachers have three siblings, five teachers have four siblings, three teachers have five siblings, one teacher has 6 siblings and another teacher has eight siblings.  

This information could be better understood as following:

Students

zero siblings   - 2 students

one sibling      - 4 students

two siblings    - 7 students

three siblings - 5 students

four siblings   -2 students

Teachers

0 - zero siblings - 1 teacher

1- one sibling     - 3 teachers  

2- two siblings   -2 teachers

3- three siblings -4teachers  

4 -four siblings   -5 teachers

5- five siblings   -3 teachers

6 - six siblings   - 1 teacher

8- eight              - 1 teacher

That is why, it is possible to conclude that there is a tendency for the students to have fewer number of siblings than the teachers.