Create New Variables - Scale Variable(s) - Standardize Within Variable

This QScript transformation creates a new variable for each selected variable where the data is standardized. This means that each variable has its mean value subtracted, resulting in a mean of zero, and is divided by its standard deviation, resulting in a new standard deviation of 1.

Example

Consider the data below

For each column/variable in the data, this QScript will subtract the mean of the column from each entry and then divide by the standard deviation of the column to yield the following

How to apply this QScript

Start typing the name of the QScript into the Search features and data box in the top right of the Q window.
Click on the QScript when it appears in the QScripts and Rules section of the search results.

OR

Select Automate > Browse Online Library.
Select this QScript from the list.

Customizing the QScript

This QScript is written in JavaScript and can be customized by copying and modifying the JavaScript.

Customizing QScripts in Q4.11 and more recent versions

Start typing the name of the QScript into the Search features and data box in the top right of the Q window.
Hover your mouse over the QScript when it appears in the QScripts and Rules section of the search results.
Press Edit a Copy (bottom-left corner of the preview).
Modify the JavaScript (see QScripts for more detail on this).
Either:
- Run the QScript, by pressing the blue triangle button.
- Save the QScript and run it at a later time, using Automate > Run QScript (Macro) from File.

Customizing QScripts in older versions

Copy the JavaScript shown on this page.
Create a new text file, giving it a file extension of .QScript. See here for more information about how to do this.
Modify the JavaScript (see QScripts for more detail on this).
Run the file using Automate > Run QScript (Macro) from File.

JavaScript

includeWeb("QScript Scale Functions");

if (!scaleQuestions("standardize", false))
    conditionallyEmptyLog("QScript cancelled.");
else
    conditionallyEmptyLog("QScript finished.");