Question

Mr. Taylor wanted to study the effect of being absent on student test scores in math class. Mr. Taylor plotted the data he collected from his second period class on the graph below. If a line of best fit is drawn for Mr. Taylor's data, what would the meaning of the slope represent?



A scatter plot is shown with 30 data points showing a strong negative relationship. The x-values of the data points extend from 0 to 9, and the y-values of the data points extend from 100 to 0.





A.
The slope represents how much the score changes based on the number of absences.

B.
The slope represents how many absences students have on average.

C.
The slope represents the highest grade a student can score based on the number of absences.

D.
The slope represents the change in absences based on the test scores.

Answer 1

A. The slope tells how much the test score changes (on average) for each additional absence — i.e., change in score per one more absence.