> For the complete documentation index, see [llms.txt](https://docs.predicteasy.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.predicteasy.com/data-preprocessing/log-transform.md).

# Log Transform

The log transformation is, arguably, the most popular among the different types of transformations used to **transform skewed data to approximately conform to normality.** It's especially useful when the data has a long tail, i.e., it's positively or negatively skewed. Log transformation can help stabilize variance and make relationships between variables more linear.

<figure><img src="/files/noaeKp0ezoi3qSY36RPw" alt="" width="311"><figcaption></figcaption></figure>

**Steps to follow:**

1. Identify and highlight the columns you wish to Log Transform. Click and drag to select the specific range (e.g., A1:A30).
2. Look for the "Log Transform" option within PredictEasy and select specific range.
3. &#x20;If the selected area has headers, make sure to check the checkbox designated for headers. This ensures that the add-on considers the first row as header during the log transformation process.
4. Click the "Transform" button within the PredictEasy interface. This action triggers the Log Transformation process.