We have just conducted 2 surveys of 600 people outside retail outlets
and the results are different. Unfortunately, the demographic make-up
of the two surveys varies (both age of respondent and social class).
The key questions in the survey are a number of agree/ disagree scales
on attitudes to aspects of shopping in the retail outlets.
Is is possible to determine what part of the change is due to the
difference in sample profiles and what part is due the genuine
difference in responses?
Thanks for you help