---
title: cusum
description: OpenBB Terminal Function
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# cusum

Cumulative sum algorithm (CUSUM) to detect abrupt changes in data

### Usage

```python
cusum [-t THRESHOLD] [-d DRIFT]
```

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## Parameters

| Name | Description | Default | Optional | Choices |
| ---- | ----------- | ------- | -------- | ------- |
| threshold | threshold | 0.0 | True | None |
| drift | drift | 0.0 | True | None |

![cusum](https://user-images.githubusercontent.com/46355364/154306207-d68f53f4-2f9a-4c1a-8e0e-b83d49938759.png)

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