Scatterplots, Trend Lines, Associations

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points

What type of association does this scatter plot represent?

• positive linear association
• negative linear association
• no association
• nonlinear association

What type of association (correlation) does this graph have?

• positive 
• negative
• none
• all of the above

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

Tags

CCSS.HSF.IF.B.4

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

• 2
• 1/2
• -2
• -1/2

Tags

CCSS.8.EE.B.5

• y = x ; 20
• y = x + 2 ; 22
• y = 2 ; 2
• y = 0.5x + 2 ; 12

• $100
• $200
• $300
• $400

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

• A.
• B.
• C.
• D.

The number of siblings you have and your weight. 

• Positive correlation
• Negative correlation
• No correlation

Which best describes the form of this scatterplot?

• linear
• nonlinear
• scattered

Tags

CCSS.8.F.A.3