Correlation Coefficient Graphs

Which of the graphs would have a correlation coefficient of r = 0 ?

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Which of the graphs would have a correlation coefficient of r = 0.98 ?

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Which of the graphs would have a correlation coefficient of r = -0.97 ?

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Which of the graphs would have a correlation coefficient of r = 0.69 ?

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If a scatter plot shows a downward trend, what can be said about the correlation coefficient?

• It is positive.

• It is negative.

• It is zero.

• It is undefined.

As shown in the table, a person's target heart rate during exercise changes as the person gets older. Use the graphing calculator to find the correlation coefficient (r).

• -0.999

• -0.664

• 0.998

• 1.503

What kind of correlation?

• Weak Positive

• Weak Negative

• Strong Positive

• Strong Negative

What kind of correlation?

• Strong Positive

• Strong Negative

• Weak Negative

• Weak 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