Question

A survey of a group of seventh graders and a group of teachers at a local middle school asked how many siblings they each have. The dot plots below show the results. Based on the shape of the two dot plots, which statements correctly compare them? Select three choices. The center of the data for students has a value less than that of the center of the data for teachers. The center of the data is to the right of the dot plot for both teachers and students. There is a greater variation in the data for teachers than for students. Both sets of data cluster around 2. The same number of teachers as students were surveyed.

Answer 1

The center of the data for students is less than that of the center for teachers, there is a greater variation in the data for teachers, and both sets of data cluster around 2.

Step-by-step explanation:

The statements that correctly compare the dot plots are:

1. The center of the data for students has a value less than that of the center of the data for teachers. This is evident from the position of the medians on the dot plots.

2. There is a greater variation in the data for teachers than for students. This can be seen from the spread of the data, which is larger for teachers.

3. Both sets of data cluster around 2. This means that a large number of both students and teachers have 2 siblings.