# Simpson's paradox

> phenomenon in probability and statistics, in which a trend appears in several different groups of data but disappears or reverses when these groups are combined

**Wikidata**: [Q757290](https://www.wikidata.org/wiki/Q757290)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Simpson's_paradox)  
**Source**: https://4ort.xyz/entity/simpson-s-paradox


## References

1. Mathematical Contributions to the Theory of Evolution
2. Freebase Data Dumps. 2013
3. Quora
4. [Source](https://golden.com/wiki/Simpson's_paradox-EK58R)