Scatter Plots Line of Best Fit Equations

Find the slope for the trend line using points (2,2) and (4,3)

• 2

• 1/2

• -2

• -1/2

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

440 turtles

• 440 turtles

• 40 turtles

• 150 turtles

• 90 turtles

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

Which line is the best fit for the data?

• 
• 
• 
• 

Which line is the best fit for the data?

• 
• 

Which statement best explains whether the trend line is a good fit for the data?

• The trend line is NOT a good fit for the data because there is an outlier.

• The trend line is a good fit for the data because it passes through two of the data points.

• The trend line is a good fit for the data because the data represents a positive association, and the line has a positive slope.

• The trend line is NOT a good fit for the data because most of the points are below the trend line.

Does the line of best fit seem to be accurate?

• Yes

• No

What are the coordinates of the outlier?

• (2,1)

• (4,3)

• (1,2)

• There is not an outlier.

Carlota and Julie drew trend lines for the same data set. Which line seems to be a better fit for the data?

• Carlota's Trend Line

• Julie's Trend Line