Question

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

Explanation:

The line of best fit is used to model the relationship between two variables (here, time spent on homework and quiz score). The slope of a line in a regression context represents the change in the dependent variable (quiz score) for a unit change in the independent variable (time spent on homework). It's about the expected change (based on the trend of the line of best fit, not the actual individual scores).

Answer:

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