Sometimes your research hypothesis may predict that the size of a regression coefficient should be bigger for one group than for another.  For example, you might believe that the regression…
Read More

Sometimes your research may predict that the size of a regression coefficient should be bigger for one group than for another. For example, you might believe that the regression coefficient…
Read More

NOTE:  This page was created using SPSS version 16.  Some of the syntax may not work in earlier versions of SPSS. NOTE:  We would like to thank David Nicholas from…
Read More

If you are not familiar with three-way interactions in ANOVA, please see our general FAQ on understanding three-way interactions in ANOVA.  In short, a three-way interaction means that there is…
Read More

NOTE:  This page was created using SPSS version 15, but the syntax should work with later versions of SPSS. First off, let’s start with what a significant three-way interaction means. …
Read More

SPSS FAQ: What types of weights do SAS, Stata and SPSS support?

Introduction Panel data analysis, also known as cross-sectional time-series analysis, looks at a group of people, the ‘panel,’ on more than one occasion. Panel studies are essentially equivalent to longitudinal…
Read More

This module introduces the reading of raw data files into SPSS.  It does not show how to read all possible data formats, but aims to show how to read many…
Read More

Page 146 Figure 5.1  Exploratory band regression curve (5 bands) based on cross-medians from Table 5.1. GET FILE ‘d:rwgdatacrfe.sav’. NOTE:  We were unable to add the band lines as shown…
Read More

page 150 Table 5.1 Observed (obs) and estimated expected (exp) frequencies within each decile of risk, defined by fitted value (prob.) for dfree = 1 and dfree = 0 using…
Read More