How to Scale Variable(s) to Center Within Case

Standardizing within case means scaling each case (row) of the raw data so that it has a mean of 0 and a standard deviation of 1. This article describes how to go from the data below:

To the following:

Requirements

• A Displayr document that contains one or more Nominal - Multi, Ordinal - Multi, Numeric - Multi, Numeric - Grid, Nominal, Ordinal or Numeric variable sets.

Method

This transformation creates for each selected variable set, a new R variable set containing the transformed data after centering within case. To standardize a variable:

1. Select the variable or variable sets in the Data Sources tree.
2. Still in the Data Sources tree, either hover over any variable in your Data Sources tree > Plus (+) > Insert Variable(s) > Ready-Made New Variable(s) > Scale Variable(s) > Center Within Case or else from the toolbar menu, select the icon > Data > Variables > New > Ready-Made New Variable(s) > Scale Variable(s) > Center Within Case.
3. OPTIONAL: If your document contains more than one data file you will be prompted to select the data file. Click OK.
4. Next, you will be asked to select the variable sets you want to standardize, click OK.
5. A new numeric variable is created. Centering data means that the average of a variable is subtracted from the data. 

See Also

Scale Variable(s) to Center Within Variable