## Partial Leverage Variables

The *partial leverage output variables* are
variables used in the partial leverage plots.
For each interval **X** variable, the corresponding
partial leverage **X** variable is named **X_****xname**,
where **xname** is the **X** variable name.
For each pair of **Y** and **X** variables, the
corresponding partial leverage **Y** variable
is named **yname**_**xname**, where
**yname** is the **Y** variable name and
**xname** is the **X** variable name.
Up to the first three characters of the response
variable name are used to create the new variable name.

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