Chapter 17
Transformations of Categorical Variables
17.2 General Considerations for Categorical Variables
17.5 Dummy Coding of Categorical Variables
17.6 Multidimensional Categorical Variables
17.7 Lookup Tables and External Data
17.1 Introduction
In this chapter we will deal with transformations of categorical variables. With categorical variables we mean variables such as binary, nominal, or ordinal variables. These variables are not used in calculations—instead they define categories.
In Chapter 16 – Transformations of Interval-Scaled Variables, we saw a lot of transformations of interval data. Most of these transformations were based on calculations. With categorical ...
Get Data Preparation for Analytics Using SAS now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
