Hi
I am looking for some information on sample sizes for panel data versus
cross sectional (i.e. adhoc). More specificially, let's say I have a
panel of 5000 members, with 80% consistency (i.e. 80% of the respondents
at time t are the sames as at t-1), how large should my sample be if I
did an adhoc study to get the same accuracy (i.e. level of variance).
Apparently there is a table that compares the two based on the
consistency rate.
Thanks for your help.
Nicole
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