Question

kalantras math teacher plots student grades on their weekly quizzes against the number of hours they say they study on the pair of coordinates axes and then draws the line of best fit. what does the slope of the line represent?
answer
the change in expected quiz score for every additional one hour students spend on their homework.
a prediction of a students quiz score if they spent 1 hour on their homework.
the change in a students actual quiz score for every additional one hour that student spent on their homework.
a students expected quiz score if they spent no time on their homework.

Explanation:

In a scatter plot with a line of best fit, the slope represents the average change in the y-variable (quiz score) for each 1-unit increase in the x-variable (time spent on homework). It describes the expected, not actual, change in the dependent variable corresponding to a change in the independent variable.

Answer:

The change in expected quiz score for every additional one hour students spend on their homework.