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 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
A covariance is basically an unstandardized correlation.
This tutorial covers