Line of Best Fit Review

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

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

• A
• B
• C
• D

In a scatterplot, an outlier...

• ...is something we didn't learn 8th grade
• ...is a puppet with a long nose named Pinocchio
• ...is a point that is far outside the main cluster of points/ordered pairs
• ...is a really naughty point who doesn't tell the truth when outside

What does the slope represent in this situation?

• The sloth runs 1 feet in 3 minutes
• The sloth runs 3 feet in 1 minute
• The sloth runs fast
• The sloth runs 6 feet in 1 minute

Click on Image. Blue points are NOT necessarily data from the set.

• y = -5/8 x + 9

• y = 5/8 x + 9

• y = -8/5 + 9

• y = 8/5 - 9

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

What is the y-intercept?

• -2

• 3

• 2

• -3

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

• Yes

• No

What are the coordinates of the outlier?

• (1,9)

• (9,1)

• (2,2)

• y=x