Factor analysis examines which variables in your data measure which underlying factors.
This tutorial illustrates the ideas behind factor analysis with a simple step-by-step example in SPSS.
A nicely detailed, step-by-step SPSS factor analysis example.
We'll cover how & why to use promax rotation, remove items, decrease the number of factors and more...
This tutorial quickly walks you through some handy routines for creating APA style tables for
This tutorial quickly walks you through the basics as well as troubleshooting such as
Split-half reliability is the adjusted correlation between two test halves.
This tutorial quickly walks you through
The right way to compute means over variables is SPSS’ MEAN function.
For example: COMPUTE MEAN_SCORE = MEAN(Q1 TO Q5). computes mean_score as the mean over variables Q1 to Q5. This method also works correctly if you there's any missing values in your data.
A covariance is basically an unstandardized correlation.
This tutorial covers
SPSS FACTOR computes wrong covariances when pairwise exclusion of missing values is used.
For correct covariances, use