Scatter Plots and Equations of Lines of Best Fit

TRUE OR FALSE: Data points that lie above the trend line should be about the same distance as data points below the trend line.

• True

• False

TRUE OR FALSE: A line of best fit must go through the origin.

• True

• False

Which scatter plot shows a negative relationship?

• Graph A

• Graph B

• Graph C

• Graph D

Which scatter plot shows no relationship?

• Graph A

• Graph B

• Graph C

• Graph D

What are the coordinates of the outlier?

• (2,1)

• (4,3)

• (1,2)

• There is not an outlier.

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

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Which of the following lines represents the line of best fit for the scatter plot?

• There is no line of best fit for this graph.

• B

• C

• D

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