How to Scale Variable(s) to Standardize Within Case

This article describes how to create a new variable(s) that is standardized and will have an average of 0 for each respondent, and that will optionally have a standard deviation of 1 for each respondent. The Sample Standard Deviation is used in this calculation. Please consider the data below, on the left is the raw data of a scale question Strongly agree to Strongly disagree. On the right is the same raw data but standardized.

Requirements

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

Method

To use this transformation:

1. Select one or more Nominal - Multi, Ordinal - Multi, Numeric - Multi, Numeric - Grid, Nominal, Ordinal or Numeric variable sets in the Data Sets tree.
2. Still in the Data Sets tree, either hover over any variable in your Data Sets tree > Plus (+) > Insert Variable(s) > Ready-Made New Variable(s) > Scale Variable(s) > Standardize Within Case or else from the toolbar menu, select Anything > Data > Variables > New > Ready-Made New Variable(s) > Scale Variable(s) > Standardize 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 transform, click OK.
5. For each selected variable set, a new variable set containing the standardized data within the respondent is created.

See Also

Scale Variable(s) to Standardize Within Variable