I have a data set with three groups of respondents (Managers, Senior Supervisors, and Junior Supervisors). I need to calculate an un-weighted average for a scale score. I need an un-weighted average because my sample of junior and senior supervisors is much larger then my sample of managers. I am using SPSS. Is there a macro I can use or something like that? I have 120 variables so I really don’t want to do this by hand.

Thanks for your help.