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

Save variable(s) that are standardized to have a mean of 0 and standard deviation of 1 for each case

This QScript transformation creates for each selected variable set, a new R variable setquestion, a new R question containing the standardized data within respondent.

Technical details

This QScript standardizes data from selected Number - Multi or Pick One - Multi questionsNumeric - Multi or Binary - Multi variable sets, generating a new copy of each. The new standardized data will have an average of 0 for each respondent, and will optionally have a standard deviation of 1 for each respondent. The Sample Standard Deviation is used in this calculation.

This QScript requires Q 4.8 or later

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

// Segmentation - Standardize Data by Case

includeWeb("QScript Scale Functions");

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

Prior to the 15th of December, 2015, this page was known as Segmentation - Standardize Data by Case

See also

• QScript for more general information about QScripts.
• QScript Examples Library for other examples.
• Online JavaScript Libraries for the libraries of functions that can be used when writing QScripts.
• QScript Reference for information about how QScript can manipulate the different elements of a project.
• JavaScript for information about the JavaScript programming language.
• Table JavaScript and Plot JavaScript for tools for using JavaScript to modify the appearance of tables and charts.