---
title: rolling
description: This page contains information about the 'Rolling Mean' and 'Standard
  Deviation' in Python data analysis. It covers usage, parameters, and provides visual
  representations.
keywords:
- rolling
- mean
- std deviation
- usage
- parameters
- n_window
- window length
- data analysis
- statistics
---

import HeadTitle from '@site/src/components/General/HeadTitle.tsx';

<HeadTitle title="forex/qa/rolling - Reference | OpenBB Terminal Docs" />

Rolling mean and std deviation

### Usage

```python
rolling [-w N_WINDOW]
```

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## Parameters

| Name | Description | Default | Optional | Choices |
| ---- | ----------- | ------- | -------- | ------- |
| n_window | Window length | 14 | True | range(5, 100) |

![rolling](https://user-images.githubusercontent.com/46355364/154308175-bb244d55-a6e0-4d6e-80f4-b3937dcd8ed4.png)

---