Correlation Coefficient Notes

Describe the relationship between the variables.

• no correlation
• strong positive correlation
• strong negative correlation
• weak positive correlation

Estimate the correlation coefficient

• r=-1
• r=1
• r=-0.5
• r=0.5

Estimate the correlation coefficient.

• r=1
• r=-1
• r=0.5
• r=-0.5

Describe the relationship between the variables.

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

Describe the relationship between the variables.

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

What does a correlation coefficient of
r = 0 mean?

• perfect positive correlation
• no correlation
• perfect negative correlation

Describe the correlation in the graph shown.

• Strong Negative
• Strong Positive
• Weak Negative
• Weak Positive

A perfect positive correlation has a correlation coefficient of ____. 

• 1
• -1
• 0

A perfect negative correlation has a correlation coefficient of ____. 

• 1
• -1
• 0

Which sentence describes the relationship shown on this scatterplot?

• As the temperature decreases, the visitors increase. 
• As the temperature increases, the number of visitors increases. 
• As the visitors increase, the temperature decreases. 
• No correlation