Question

Your teacher surveys the class to determine the number of hours that each student spent on social media. Your teacher created a table and scatter plot graph that displayed the number of hours the average final grade based on the hours. The trend line (equation) for the data is y=-7.2x+98.9. Interpret the slope. How many points does the average final grade decrease for 1 hour on social media.

Answer 1

The slope of the trend line is -7.2. This means that for every 1 hour increase in the number of hours spent on social media, the average final grade decreases by 7.2 points.