Your teacher surveyed the class to determine the number of hours that each student spent on social media. Your teacher created a table and a scatterplot graph that displayed the number of hours and the average final grade based on the hours. The trend line (equation) for the data is y= -7.2x + 98.9. Interpret the slopeS how many points does the average final grade decrease for 1 hour on social media?
1 answer
The slope of the trend line in this case 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.