AP Statistics Unit Review

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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Describe the type and strength of the correlation for the following data.

• Strong Positive

• Weak Positive

• Strong Negative

• Weak Negative

Describe the type and strength of the correlation for the following data.

• Strong Positive

• Weak Positive

• Strong Negative

• Weak Negative

Based on this scatterplot, approximate what score should a student who attended class 22 days expect to receive on the exam?

• 84

• 71

• 95

• 75

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

• Positive, weak

• Negative, weak

• Positive, strong

• Negative, strong

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• 0.07 weak

• -0.26 weak

• -0.26 moderate

• 0.07 strong

Find the equation of the line of best fit for this table.

• y = -2.28x + 51.08

• y = 51.08x - 2.28

• y = 0.06x - 0.26

• y = -2.28x - 0.26