Table 5.  Measures of the degree of map correlation, depending on measurement

(after Bonham-Carter, 1994)

 

 

 

Nominal

 

Ordinal

 

Interval/Ratio

 

Nominal

 

Chi square, Kappa, Odds ratio, Contrast weight, etc.

 

Median by nominal class

 

Mean by nominal class

 

Ordinal

 

 

 

Rank correlation coefficient

 

Rank correlation coefficient

 

Interval/Ratio

 

 

 

 

 

Covariance, Correlation coefficient