# CCSS IP Math I 4.3.2 Example 1

An education research team is interested in determining if there is a relationship between a student’s vocabulary and how frequently the student reads books. The team gives 20 students a 100-question vocabulary test, and asks students to record how many books they read in the past year.
The results are in the table below.
Is there a linear relationship between the number of books read and test scores? Use the correlation coefficient,

*r*, to explain your answer.## Discover Resources

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