Lines of Fit

What is the line of best fit?

• y = 5/3x + 375

• y = 1/3x + 475

• y = 5/3x + 3

• y = 1/3x + 375

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

What type of association does this graph have?

• positive

• negative

• none

• all of the above

The equation of the trend line is y= 1/2x +1
How many laps can a bicycle make around the park in 23 minutes?

• 44 laps

• 12 1/2 laps

• 23 laps

Use the line of best fit to approximate rate of change relative to the scatter plot above.

• 7/5

• 5/7

• -7/5

• -5/7

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

• Graph A

• Graph B

• Graph C

• Graph D

Is this line an accurate line of best fit for the data?

• Yes

• No

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?

• A

• B

• C

• D

Which line would be the line of best fit?

• Green line (C)

• Orange line (B)

• Purple line (A)

• None of the above