Hi,
I have a client who has been conducting a survey for several years, each
year being a "wave". This year, the whole survey was changed: most of
the questionnaire, sample design and size, locations (prior waves had
only four cities, the new one has 8 cities). I was asked about doing
some significance testing on a few variables. I was very uneasy about
this because everything about the surveys is different. I feel that any
comparisons would be shaky because so much has changed. Stat theory
doesn't seem to say anything about comparing across different waves such
as this. Any thoughts on doing significance tests on waves of surveys
where everything about the surveys have changed from one wave to the
next? Any literature I can be pointed to? I've run into this before
with other clients, so it's a common occurrence.
Thanks,
Walt
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Walter R. Paczkowski, Ph.D.
Data Analytics Corp.
44 Hamilton Lane
Plainsboro, NJ 08536
________________________
(V) 609-936-8999
(F) 609-936-3733
dataanalytics@earthlink.net
www.dataanalyticscorp.com
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