A high school math teacher has students maintain records on their study time and then compares their average nightly study time to the scores received on an exam. A random sample of the students showed these comparisons:

8. Make a scatterplot for the above information. Label the axes appropriately.

9. Draw a line of best fit

10. If a student studies 30 minutes, according to your line of best fit, what will his/her grade be?

Study Time (Nearest 5 min.) 15 25 50 20 25 30 40 15 25 30 45 35 Exam Score 58 72 85 75 68 88 80 74 78 70 94 75