User Guide

413
Linear Regress
ion
Figure 26-2
Linear Regression dialog box
E In the Linear Regression dialog box, select a numeric dependent variable.
E Select one or more numeric independent variables.
Optionally, you can:
 Group independent variables into blocks and specify different entry methods for
differ
ent subsets of variables.
 Choos
e a selection variable to limit the analysis to a subset of cases having a
particular value(s) for this variable.
 Select a case identification variable for identifying points on plots.
 Select a numeric WLS Weight variable for a weighted least squares analysis.
WLS. Allows you to obtain a weighted least-squares model. Data points are weighted
by the r
eciprocal of their variances. This means that observations with large variances
have less impact on the analysis than observations associated with small variances. If