Probability and Statistical Biases
Ecological fallacy
Assuming group-level data applies to individuals.
What Is Ecological fallacy?
Ecological fallacy is a thinking trap where assuming group-level data applies to individuals.
How It Tricks You
It can make noisy, incomplete, or poorly framed data feel more meaningful than it is.
Real-World Example
A city-level trend is assumed to describe every resident.
Seen Online As
- I am judging the person before I understand the situation.
- The group label is doing too much of the thinking.
- My side gets context; their side gets blame.
What To Ask Instead
Does the group pattern hold for individuals?
Related Thinking Traps
Common Situations
Quick FAQ
What is Ecological fallacy?
Assuming group-level data applies to individuals.
What is an example of Ecological fallacy?
A city-level trend is assumed to describe every resident.
How do I spot Ecological fallacy?
Does the group pattern hold for individuals?