Scatter Plots Correlation Coefficient

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

• A

• B

• C

• D

If a scatterplot has no correlation then...

• ...it has no ordered pairs

• ...it has ordered pairs that have a negative pattern

• ...its ordered pairs have no predictable pattern

• ...if it makes a lion on a graph (roar!)

What type of correlation does this scatter plot show?

• positive linear association

• negative linear association

• no association

• nonlinear association

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

What type of association does this graph have?

• positive

• negative

• none

• all of the above

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

What type of correlation does this graph have?

• positive 

• negative

• none

• all of the above

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

Describe the correlation in the graph shown.

• Strong Negative

• Strong Positive

• Weak Negative

• Weak Positive