Strong and Weak Correlations Scatter Plots

Describe the correlation in the graph shown.

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

What type of association does this graph have?

• positive
• negative
• none
• all of the above

r=0.3

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

r=-0.89

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

Estimate the correlation coefficient for this scatterplot.

• r = 1.2
• r = 0.89
• r = 0
• r = -0.89

What type of association does this scatter plot represent?

• positive linear association
• negative linear association
• no association
• nonlinear association

Determine the correlation coefficient of the given data:

• .9820

• -.9643

• -1.409

• .164

Based on the graph, if Joe earned $400, how many hours did he work?

• 15 hours
• 20 hours
• 25 hours
• 30 hours

What can we determine from the correlation coefficient (r)?

• Style + Type

• Percentage + Direction

• Strength + Direction

• Strength + Style

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