Correlations & Line of Best Fit

• strong positive

• strong negative

• weak positive

• weak negative

• strong positive

• strong negative

• weak positive

• weak negative

• strong positive

• strong negative

• weak positive

• weak negative

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

Estimate the correlation coefficient

• r = 1

• r = -1

• r ≈ -0.8

• r ≈ 0.8

• r ≈ -0.5

Describe the relationship between the variables.

• Weak positive correlation
• Weak negative correlation
• Strong positive correlation
• Strong negative correlation

Amount of Education and Amount of income

• Positive Correlation

• Negative Correlation

• No Correlation

Number of days absent from school vs. math average

• Positive Correlation

• Negative Correlation

• No Correlation

Test scores vs. shoe sizes

• Positive Correlation

• Negative Correlation

• No Correlation