Aggregate A rate
78.0%
Simpson's Paradox Simulator
Edit subgroup counts and see how aggregate rates can reverse the within-group pattern.
Aggregate B rate
82.6%
- Reversal status
- Reversal detected
- Group mix mechanism
- A has more hard cases
- Simulated reversal frequency
- Not run
| Group | A rate | B rate |
|---|
Run the simulation to fill Monte Carlo metrics and convergence.
| Trial | A rate | B rate | Reversal frequency |
|---|
subgroup rate = successes / total; aggregate rate = summed successes / summed total
How?
How this is calculated
Simpson's paradox is flagged only when one arm has the higher rate in every subgroup and the other arm has the higher aggregate rate. Ties are not counted as a full reversal.
Formula: subgroup rate = successes / total; aggregate rate = summed successes / summed total
Sources
- Stanford Encyclopedia of Philosophy Simpson's Paradox. Stanford Encyclopedia of Philosophy. Retrieved .
Method last reviewed