Using Line of Best Fit to Make Predictions

Using Line of Best Fit to Make Predictions

Multiple Choice

A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside. Based on the trend line, about how many guests should be expected if the temperature is around 80°?

• 8000

• 8500

• 7300

• 9300

Multiple Choice

A teacher made the following graph showing absences vs. final grades. Predict the grade of a student that has 7 absences.

• 50

• 45

• 70

• 60

Multiple Choice

The graph below shows a line of best fit for data collected on the amount of time teenagers spend on the computer and watching television.

Based on the line of best fit, how much time does a teenager spend watching television if they spend 120 minutes on the computer?

• 150 min

• 135 min

• 165 min

• 180 min

Multiple Choice

Mrs. Moises, the school counselor, keeps a candy jar in her office for students. During one week, she kept count of how many students came to visit her and the number of candies in the jar, as shown in the scatter plot below.

Based on the trend line, what is the best prediction for the number of candies in the jar when 30 students visit her?

• 90

• 180

• 135

• 150

Multiple Choice

A teacher made the following graph showing the number of hours that a student studied for an exam versus their exam grade.

Predict the grade of a student if they studied for 3.5 hours

• 80

• 100

• 95

• 90

Exit Ticket

Let see what you know

Multiple Choice

The red line represents the line of best fit for the scatter plot. How many ice cream sales are expected if the temperature is 90°?

• 55
• 0
• 103
• 100

Multiple Choice

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing

Multiple Choice

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing

Multiple Choice

Using the given scatter plot, estimate how many emails per day an 18 year old gets.

• 48

• 38

• 28

• 18

Multiple Choice

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters