User Guide

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Chapter 24
Partial Corr
elations Options
Figure 24-3
Partial Correlations Options dialog box
Statistics. You can choose one or both of the following:
 Means and sta ndard deviations. Displayed for each variable. The number of cases
with nonmissing values is also shown.
 Zero-order correlations. A matrix of simple correlations between all variables,
includin
g control variables, is displayed.
Missing Values. You can choose one of the following alternatives:
 Exclude cases listwise. Cases having missing values for any variable, including a
control v
ariable, are excluded from all computations.
 Exclude
cases pairwise.
For computation of the zero-order correlations on which
the partial correlations are based, a case having missing values for both or one
of a pair of variables is not used. Pairwise deletion uses as much of the data as
possibl
e. However, the number of cases may differ across coefficients. When
pairwise deletion is in effect, the degrees of freedom for a particular partial
coefficient are based on the smallest number of cases used in the calculation
of any o
f the zero-order correlations.