The scatterplot shows the relationship between the number of hours a student studied for a test () and their test score (). A line of best fit is drawn.
Which of the following best describes the meaning of the slope of the line of best fit in this context?
The average test score for students who did not study.
The predicted increase in test score for each additional hour studied.
The total number of hours studied by all students.
The highest test score achieved by any student.
