Normalization
The Normalization transformation is used to normalize the data in one or more columns of a data table.
See Transforming data for information about how to add a transformation to an analysis.

| Option | Description |
|---|---|
| Result option | |
| Add columns | Use this option to add new normalized columns to the resulting data table. The old columns will also be kept. |
| Replace selected columns | Use this option to replace the old columns with the new, normalized ones. |
| Available columns | Lists the columns available in the selected data source. |
| Add > | Moves the columns selected in the Available columns list to the Selected columns list. |
| < Remove | Removes the selected columns from the Selected columns list. |
| Remove All | Removes all columns form the Selected columns list. |
| Move Up | Moves the selected column in the Selected columns list up one step. |
| Move Down | Moves the selected column in the Selected columns list down one step. |
| Selected columns | Lists the columns that are selected to be normalized. |
| Method | Specifies the normalization method to use. See Normalizing columns and the theory section for each method for further information about the various methods. |
| Baseline column | Specifies the baseline column to use (in some normalization methods only). |
| Percentage | Specifies the percentage value (P) to use when normalizing by percentile or by trimmed mean. |
| Description | Shows a brief description of the currently selected normalization method. |
| Column names setting | Specifies how the naming of the normalized columns should be handled. You can either add the word "Normalized:" to the column name of the original columns or use the expression (normalization equation) as a column name. If you have selected to replace columns you will also get a third option where you can keep the current column names. |
- Normalizing columns
A number of normalization methods can be written as expressions, or used when transforming data. See the links at the end of this topic for a description of the theory behind each method.
Parent topic: Transforming data