# Data Cleaning

Sometimes, there are some impurities in your data, such as incorrect data types, syntax errors, or missing values. These problems can cause some biases when you grasp insights from your data. Before doing any analysis, you can use **`Data Cleaning`** actions to deal with those impurities and make sure your data has a good quality.

{% content-ref url="/pages/-McFM-hOpk7lBZIBBc2g" %}
[Cleanse](/acho-studio/data-prep-projects/applying-actions/data-cleaning/cleanse.md)
{% endcontent-ref %}

{% content-ref url="/pages/-McFM1300H5ioetLe62Y" %}
[Replace](/acho-studio/data-prep-projects/applying-actions/data-cleaning/replace.md)
{% endcontent-ref %}

{% content-ref url="/pages/-McFM0ilON8sy7NDdkvS" %}
[Change Type](/acho-studio/data-prep-projects/applying-actions/data-cleaning/change-type.md)
{% endcontent-ref %}

{% content-ref url="/pages/-McFLzbzyO-d\_pBZndG0" %}
[Deduplicate](/acho-studio/data-prep-projects/applying-actions/data-cleaning/deduplicate.md)
{% endcontent-ref %}

{% content-ref url="/pages/-McFMAk1aWrDUajjVJnK" %}
[Split](/acho-studio/data-prep-projects/applying-actions/data-cleaning/split.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MksLQhW-YgVTmCuHe0e" %}
[Flatten](/acho-studio/data-prep-projects/applying-actions/data-cleaning/flatten.md)
{% endcontent-ref %}


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.acho.io/acho-studio/data-prep-projects/applying-actions/data-cleaning.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.