Correlation

Correlation

1. Measures

2. Describe

   • Relationship/Association between
     • Two or more variables
       • With single number
         • Range
           • -1
           • +1
         • Known as
           • Correlation Coefficient
       • Must be Quantitative Variables

3. Does not imply causation

4. Has no unit of measurement

5. Direction

   • Positive
   • Negative

6. Type

   • Parametric
     • Pearson Product Moment Correlation
   • Non-parametric
     • Spearman's Rank Correlation
     • Kendall's Tau