# law of total variance

> theorem

**Wikidata**: [Q1055879](https://www.wikidata.org/wiki/Q1055879)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Law_of_total_variance)  
**Source**: https://4ort.xyz/entity/law-of-total-variance


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)