Variable Transformations

Scaling and Translation Transformations

Figure 32.15 shows the transformations that are available when you select Scaling/Translation from the Family list. These transformations are used to center and scale a variable. Equations for these transformations are given in Table 32.5.

Figure 32.15 Scaling and Translation Transformations

Table 32.5 Description of Scaling and Translation Transformations
Transformation	Parameter	New Variable	Equation
	Default	Name of
center(Y)		Center_Y	$\text{[math]}$
stdize(Y)		Stdize_Y	See text.
reflect(Y; a)	$\text{[math]}$	Reflect_Y	$\text{[math]}$
a+b*Y	$\text{[math]}$	Linear_Y	$\text{[math]}$

The stdize(Y) transformation transforms the data to have zero mean and unit variance.

The reflect(Y) transformation reflects the data about the value $\text{[math]}$ .

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