---
title: unitroot
description: This page provides comprehensive instructions and usage examples for
  the unitroot tool. Unitroot, used for unit root test and stationarity, offers multiple
  regression methods including c, ct, ctt, and nc.
keywords:
- unitroot
- unit root test
- stationarity
- ADF
- KPSS
- regression
- programming
---

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

<HeadTitle title="crypto/qa/unitroot - Reference | OpenBB Terminal Docs" />

Unit root test / stationarity (ADF, KPSS)

### Usage

```python
unitroot [-r {c,ct,ctt,nc}] [-k {c,ct}]
```

---

## Parameters

| Name | Description | Default | Optional | Choices |
| ---- | ----------- | ------- | -------- | ------- |
| fuller_reg | Type of regression. Can be ‘c’,’ct’,’ctt’,’nc’ 'c' - Constant and t - trend order | c | True | c, ct, ctt, nc |
| kpss_reg | Type of regression. Can be ‘c’,’ct' | c | True | c, ct |


---

## Examples

```python
2022 Feb 16, 11:16 (🦋) /stocks/qa/ $ unitroot
         Unit Root Calculation
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━┓
┃                ┃ ADF        ┃ KPSS   ┃
┡━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━┩
│ Test Statistic │ -28.9536   │ 0.2928 │
├────────────────┼────────────┼────────┤
│ P-Value        │ 0.0000     │ 0.1000 │
├────────────────┼────────────┼────────┤
│ NLags          │ 0.0000     │ 3      │
├────────────────┼────────────┼────────┤
│ Nobs           │ 759.0000   │        │
├────────────────┼────────────┼────────┤
│ ICBest         │ -3339.2013 │        │
└────────────────┴────────────┴────────┘
```
---