Comparing Variables: Looking for Associations

Part 2: Associations in Quantitative Data

 

 

 

Stars versus Checkmarks

 

Strength and Direction Graphs

 

Correlation coefficient—a statistical measure of strength and direction of an association (p. 76)

 

Properties of r—Handout

 

 

Let Fathom compute r

 

Hand compute ‘r’ for Hand/Foot Data

 

Association versus Causation