IBM Water System SPSS COMPLEX SAMPLES 19 User Manual
181
Complex Samples General Linear Model
E
Select a
Simple
contrast and
3 Self and family
as the reference category for shopfor. Note that, once
selected, the category appears as “3” in the dialog box.
E
Select a
Simple
contrast and
1 No
as the reference category for usecoup.
E
Click
Continue
.
E
Click
OK
in the General Linear Model dialog box.
Model Summary
Figure 19-6
R-square statistic
R-square statistic
R-square, the coefficient of determination, is a measure of the strength of the model fit. It shows
that about 60% of the variation in Amount spent is explained by the model, which gives you
good explanatory ability. You may still want to add other predictors to the model to further
improve the fit.
that about 60% of the variation in Amount spent is explained by the model, which gives you
good explanatory ability. You may still want to add other predictors to the model to further
improve the fit.
Tests of Model Effects
Figure 19-7
Tests of between-subjects effects
Tests of between-subjects effects
Each term in the model, plus the model as a whole, is tested for whether the value of its effect
equals 0. Terms with significance values of less than 0.05 have some discernible effect. Thus, all
model terms contribute to the model.
equals 0. Terms with significance values of less than 0.05 have some discernible effect. Thus, all
model terms contribute to the model.