---
name: pearson
kind: function
lang: py
domain: datascience
version: "1.0.0"
purity: pure
signature: "def pearson(xs: list, ys: list) -> float"
description: "Calcula el coeficiente de correlacion de Pearson entre dos listas de floats."
tags: [statistics, correlation, python]
uses_functions: []
uses_types: []
returns: []
returns_optional: false
error_type: ""
imports: [math]
tested: false
tests: []
test_file_path: ""
file_path: "python/functions/datascience/datascience.py"
---

## Ejemplo

```python
r = pearson([1, 2, 3], [2, 4, 6])
# r = 1.0
```

## Notas

Usa solo math stdlib. No requiere numpy. Retorna 0.0 si las listas tienen longitud diferente, estan vacias, o la desviacion es cero.