You will be studying only linear scatterplots in this lesson.  You will sketch a line of best fit. From points on the line you draw, you will find the equation of the line to make predictions about future events.

View the line of best fit exercise, which will open in a new window/tab. For ease of use, the table has been reformatted below.

Sandwich Total Fat (g), Total Calories
Hamburger
Cheeseburger
Quarter Pounder
Quarter Pounder w/Cheese
Big Mac
Arch Sandwich Special
Arch Special with Bacon
Crispy Chicken
Fish Fillet
Grilled Chicken
Grilled Chicken Light		 9, 260
13, 320
21, 420
30, 530
31, 560
31, 550
34, 590
25, 500
28, 560
20, 440
5, 300

Copy the "Total Fat (g), Total Calories" data column in the graph above. Click on the link for the regression activity below and paste the data into the box below the graph, then press Update Plot.

For this interactive activity, assistance may be required. Go to the Regression Activity. 

View the results