Figure 32.15 shows the transformations that are available when you select from the list. These transformations are used to center and scale a variable. Equations for these transformations are given in Table 32.5.
Table 32.5: Description of Scaling and Translation Transformations
|
Default |
Name of |
||
|---|---|---|---|
|
Transformation |
Parameter |
New Variable |
Equation |
|
center(Y) |
Center_Y |
|
|
|
stdize(Y) |
Stdize_Y |
See text. |
|
|
reflect(Y;a) |
|
Reflect_Y |
|
|
a+b*Y |
|
Linear_Y |
|
The transformation transforms the data to have zero mean and unit variance.
The transformation reflects the data about the value 
.