Scatterplot Assignment

What is the type of association?

• Negative 
• no association
• positive 

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

Estimate the correlation coefficient for this scatterplot.

• A) r = 1.2

• B) r = 0.89

• C)r = 0

• D) r = -0.89

Estimate the correlation coefficient for this scatterplot.

• A) r = -0.9

• B) r = 1

• C) r = 0.9

• D) r = -1

A perfect positive correlation has a correlation coefficient of ____. 

• 1
• -1
• 0

A perfect negative correlation has a correlation coefficient of ____. 

• 1
• -1
• 0

What type of relationship does this scatter plot represent?

• Positive

• Negative

• No Relationship

• Constant

Describe the correlation, if the correlation coefficient is r = -0.26

• Positive, weak

• Negative, weak

• Positive, strong

• Negative, strong

Describe the correlation. r = 0.3

• Strong, positive

• Weak, positive

• Strong, negative

• Weak, negative