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"People who like this sort of thing will find this the sort of thing they like." (Lincoln)

  
  
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POSC 3003 Political analysis

Ecological fallacy

In the second edition of Essentials of political analysis (12), Pollock gave a somewhat unusual but workable illustration of how the ecological fallacy might occur:

  Opinion at Time 1 Opinion at Time 2
Person A
Yes
No
Person B
No
Yes
Person C
Yes
No
Person D
No
Yes
     
Aggregate
2 Yes, 2 No
2 Yes, 2 No

For a more conventional illustration, see Freedman, Ecological inference and the ecological fallacy.

 
 
 

mystery object, Mt Grace, July 2005