Line of Best Fit Tables

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

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y= 10

Tags

CCSS.8.EE.B.5

• y = 1.45x + 22
• y = -2x + 15
• y = 1.33x + 30
• y = -1.5x + 24

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

• Yes

• No

Tags

CCSS.8.EE.B.5

What are the coordinates of the outlier?

• (1,9)

• (9,1)

• (2,2)

• y=x

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

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

• 1

• 2

• 3

• 4

Tags

CCSS.8.EE.B.5

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

What the y-intercept for the line of best fit for the scatter plot?

• 35

• 50

• 30

• 20

Tags

CCSS.8.EE.B.5