Correlation Coefficient

Estimate the correlation coefficient for this scatterplot.

• A) r = -0.9

• B) r = 1

• C) r = 0.9

• D) r = -1

What type of correlation does this graph show?

• A) Positive

• B) negative

• C) none

• D) all of the above

Describe the correlation.

• Negative correlation

• No correlation

• Positive correlation

• Constant correlation

What type of correlation does this graph have?

• Positive correlation

• Negative correlation

• No correlation

• Constant correlation

What type of correlation does this graph show?

• Positive correlation

• Negative correlation

• No correlation

• Constant correlation

What type of correlation does this scatter plot show?

• Positive correlation

• Negative correlation

• No correlation

• Constant correlation

Estimate the correlation coefficient

• r = 1

• r = -1

• r ≈ -0.8

• r ≈ 0.8

• r ≈ -0.5

What type of association does this graph have?

• positive
• negative
• none
• all of the above

Estimate the correlation coefficient

• r=-1
• r=1
• r=-0.5
• r=0.5

Estimate the correlation coefficient.

• r=0
• r=-1
• r=1
• r=2