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Data Preparation for Analytics Using SAS by Gerhard Svolba

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Chapter 16

Transformations of Interval-Scaled Variables

 

16.1 Introduction

16.2 Simple Derived Variables

16.3 Derived Relative Variables

16.4 Time Intervals

16.5 Binning Observations into Groups

16.6 Transformations of Distributions

16.7 Replacing Missing Values

16.8 Conclusion

 

16.1  Introduction

In this chapter we will deal with transformations of interval variables. With interval variables we mean variables such as age, income, and number of children, which are measured on an interval or ratio scale. The most obvious transformation of interval variables is to perform a calculation such as addition or multiplication on them. However, we will also see in this chapter that the transformations are not restricted to simple calculations.

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